# Announcements **URL:** https://forum.mattermost.com/c/announce/15.md [Latest](https://forum.mattermost.com/latest.md) · [Categories](https://forum.mattermost.com/categories.md) --- ## [About the Announcements category](https://forum.mattermost.com/t/about-the-announcements-category/144)
**Author:** [@it33](https://forum.mattermost.com/u/it33)\ **Replies:** 0
Announcements from the Mattermost core team --- ## [\[Start Here\] Welcome to The Mattermost Forums!](https://forum.mattermost.com/t/start-here-welcome-to-the-mattermost-forums/8)
**Author:** [@system](https://forum.mattermost.com/u/system)\ **Replies:** 0\ **Last updated:** [June 25, 2015, 4:22pm UTC](https://forum.mattermost.com/t/start-here-welcome-to-the-mattermost-forums/8 "2015-06-25T16:22:55Z")
Welcome to the Mattermost discussion forums! This site is for asynchronous discussion related to all versions of Mattermost and the Mattermost open source project. To foster a safe and inclusive environment, participants… --- ## [Deprecation Notice: iOS 17 and Android 10 versions](https://forum.mattermost.com/t/deprecation-notice-ios-17-and-android-10-versions/26074)
**Author:** [@amy.blais](https://forum.mattermost.com/u/amy.blais)\ **Replies:** 1\ **Last updated:** [September 8, 2026, 12:17pm UTC](https://forum.mattermost.com/t/deprecation-notice-ios-17-and-android-10-versions/26074 "2026-09-08T12:17:58Z")
In the Mattermost Mobile App v2.45 (October 2026 release), Mattermost will stop supporting iOS v17 and earlier and Android v10 and earlier. Users should update to iOS v18 or Android v11 or newer before the v2.45 release. … --- ## [Desktop App v6.4 requires Boards v9.4.0+ for subpath deployments](https://forum.mattermost.com/t/desktop-app-v6-4-requires-boards-v9-4-0-for-subpath-deployments/26064)
**Author:** [@amy.blais](https://forum.mattermost.com/u/amy.blais)\ **Replies:** 0\ **Last updated:** [August 13, 2026, 1:32pm UTC](https://forum.mattermost.com/t/desktop-app-v6-4-requires-boards-v9-4-0-for-subpath-deployments/26064 "2026-08-13T13:32:37Z")
What’s changing? Starting with Desktop App v6.4 (November 2026), the app will no longer strip the server subpath from paths sent by Boards. This removes a workaround that caused “Team not found” errors when a team name m… --- ## [Starting with Mattermost v12.0 (October 2026), user and personal access token (PAT) sessions can no longer set post identity or display-override props](https://forum.mattermost.com/t/starting-with-mattermost-v12-0-october-2026-user-and-personal-access-token-pat-sessions-can-no-longer-set-post-identity-or-display-override-props/26052)
**Author:** [@amy.blais](https://forum.mattermost.com/u/amy.blais)\ **Replies:** 0\ **Last updated:** [August 7, 2026, 9:42am UTC](https://forum.mattermost.com/t/starting-with-mattermost-v12-0-october-2026-user-and-personal-access-token-pat-sessions-can-no-longer-set-post-identity-or-display-override-props/26052 "2026-08-07T09:42:42Z")
Why is this changing? For years, some deployments used a known workaround: a regular user session or personal access token (PAT) forged integration props such as from\_webhook together with override\_username / override\_ic… --- ## [Starting with Mattermost v12.0 (October 2026), the Mattermost web and desktop apps are built on React 19](https://forum.mattermost.com/t/starting-with-mattermost-v12-0-october-2026-the-mattermost-web-and-desktop-apps-are-built-on-react-19/26038)
**Author:** [@amy.blais](https://forum.mattermost.com/u/amy.blais)\ **Replies:** 0\ **Last updated:** [July 28, 2026, 10:10am UTC](https://forum.mattermost.com/t/starting-with-mattermost-v12-0-october-2026-the-mattermost-web-and-desktop-apps-are-built-on-react-19/26038 "2026-07-28T10:10:50Z")
Why is Mattermost upgrading to React 19? React 19 is the current stable major release of React. Upgrading keeps Mattermost on a supported version of our core UI framework, unlocks React’s concurrent rendering model, and … --- ## [Starting with Mattermost v12.0 (October 2026), atmos/camo is no longer supported as an image proxy](https://forum.mattermost.com/t/starting-with-mattermost-v12-0-october-2026-atmos-camo-is-no-longer-supported-as-an-image-proxy/25980)
**Author:** [@amy.blais](https://forum.mattermost.com/u/amy.blais)\ **Replies:** 0\ **Last updated:** [June 30, 2026, 7:31am UTC](https://forum.mattermost.com/t/starting-with-mattermost-v12-0-october-2026-atmos-camo-is-no-longer-supported-as-an-image-proxy/25980 "2026-06-30T07:31:33Z")
Why is atmos/camo support being dropped? The atmos/camo project has been archived and is no longer maintained. What will I see if I have atmos/camo configured? If your config.json has ImageProxySettings.ImageProxyType s… --- ## [Starting with Mattermost v12.0 (October 2026), OpenSearch 1.x is no longer a supported search backend](https://forum.mattermost.com/t/starting-with-mattermost-v12-0-october-2026-opensearch-1-x-is-no-longer-a-supported-search-backend/25979)
**Author:** [@amy.blais](https://forum.mattermost.com/u/amy.blais)\ **Replies:** 0\ **Last updated:** [June 30, 2026, 6:50am UTC](https://forum.mattermost.com/t/starting-with-mattermost-v12-0-october-2026-opensearch-1-x-is-no-longer-a-supported-search-backend/25979 "2026-06-30T06:50:19Z")
Why is OpenSearch 1.x support being dropped? OpenSearch 1.x reached end-of-life in May 2025. Continuing to support it requires maintaining compatibility shims for an API surface that has meaningfully diverged from OpenSe… --- ## [Starting with Mattermost v12.0 (October 2026), RHEL 7 and RHEL 8 are no longer supported deployment targets](https://forum.mattermost.com/t/starting-with-mattermost-v12-0-october-2026-rhel-7-and-rhel-8-are-no-longer-supported-deployment-targets/25974)
**Author:** [@amy.blais](https://forum.mattermost.com/u/amy.blais)\ **Replies:** 0\ **Last updated:** [June 29, 2026, 7:46am UTC](https://forum.mattermost.com/t/starting-with-mattermost-v12-0-october-2026-rhel-7-and-rhel-8-are-no-longer-supported-deployment-targets/25974 "2026-06-29T07:46:54Z")
Why is RHEL 7/8 support being dropped? Mattermost server binaries link against the system C library (glibc). For the past year, we have deliberately built against Debian Bullseye — a slightly older Linux distribution — b… --- ## [Mobile App iOS Version Support Update - v2.36.3 and v2.36.4](https://forum.mattermost.com/t/mobile-app-ios-version-support-update-v2-36-3-and-v2-36-4/25664)
**Author:** [@amy.blais](https://forum.mattermost.com/u/amy.blais)\ **Replies:** 0\ **Last updated:** [January 20, 2026, 5:04pm UTC](https://forum.mattermost.com/t/mobile-app-ios-version-support-update-v2-36-3-and-v2-36-4/25664 "2026-01-20T17:04:32Z")
Hi everyone, We want to clarify the minimum iOS version requirements for our recent mobile app releases. What’s Changing Mobile v2.36.3 and earlier: Supports iOS 15+ If you’re on iOS 15, please update to v2.36.3 … --- ## [Important Update: Changes to Desktop App Auto-Updater](https://forum.mattermost.com/t/important-update-changes-to-desktop-app-auto-updater/25657)
**Author:** [@amy.blais](https://forum.mattermost.com/u/amy.blais)\ **Replies:** 0\ **Last updated:** [January 19, 2026, 3:53pm UTC](https://forum.mattermost.com/t/important-update-changes-to-desktop-app-auto-updater/25657 "2026-01-19T15:53:00Z")
We’re making some important changes to how the Desktop App handles updates. This post explains what’s changing, why we’re making these changes, and what you need to know. What’s Changing? We are deprecating the in-app a… --- ## [RHS Popout Support for Plugins](https://forum.mattermost.com/t/rhs-popout-support-for-plugins/25626)
**Author:** [@amy.blais](https://forum.mattermost.com/u/amy.blais)\ **Replies:** 0\ **Last updated:** [January 5, 2026, 7:16am UTC](https://forum.mattermost.com/t/rhs-popout-support-for-plugins/25626 "2026-01-05T07:16:07Z")
What’s changing? Beginning in Mattermost v11.3 (January 2026 release), some plugins that register a Right Hand Sidebar (RHS) component using registerRightHandSidebarComponent will need to implement additional code to sup… --- ## [🏆 Forum Helper Heroes (Monthly Community Recognition Competitions)](https://forum.mattermost.com/t/forum-helper-heroes-monthly-community-recognition-competitions/23121)
**Author:** [@john.combs](https://forum.mattermost.com/u/john.combs)\ **Replies:** 5\ **Last updated:** [October 7, 2025, 6:05pm UTC](https://forum.mattermost.com/t/forum-helper-heroes-monthly-community-recognition-competitions/23121 "2025-10-07T18:05:18Z")
Leaderboard Thread – October 2025 Welcome to the ‘Forum Helper Heroes’ leaderboard! Each month, we’ll be recognizing the most helpful, supportive, and all-around awesome contributors across the Mattermost Forums. … --- ## [Upcoming Updates to "Mattermost Entry" Terms](https://forum.mattermost.com/t/upcoming-updates-to-mattermost-entry-terms/25285)
**Author:** [@it33\_mattermost](https://forum.mattermost.com/u/it33_mattermost)\ **Replies:** 0\ **Last updated:** [October 3, 2025, 9:30am UTC](https://forum.mattermost.com/t/upcoming-updates-to-mattermost-entry-terms/25285 "2025-10-03T09:30:26Z")
With the launch of our updated free offering, to be renamed Mattermost Entry, we’re updating the licensing terms to more explicitly protect the Mattermost brand and users of the free edition. Certain requirements, such a… --- ## [Upgrading the Mattermost web app to React 18 (v11.1)](https://forum.mattermost.com/t/upgrading-the-mattermost-web-app-to-react-18-v11-1/25000)
**Author:** [@amy.blais](https://forum.mattermost.com/u/amy.blais)\ **Replies:** 0\ **Last updated:** [August 13, 2025, 6:28am UTC](https://forum.mattermost.com/t/upgrading-the-mattermost-web-app-to-react-18-v11-1/25000 "2025-08-13T06:28:32Z")
What’s changing? Beginning in Mattermost v11.1 (November 2025), we’re upgrading the version of React used by the Mattermost web app from React 17 to React 18 which has a small chance of negatively affecting web app plugi… --- ## [Clarification and Update on the Playbooks Plugin (v11)](https://forum.mattermost.com/t/clarification-and-update-on-the-playbooks-plugin-v11/25192)
**Author:** [@amy.blais](https://forum.mattermost.com/u/amy.blais)\ **Replies:** 0\ **Last updated:** [September 8, 2025, 7:47am UTC](https://forum.mattermost.com/t/clarification-and-update-on-the-playbooks-plugin-v11/25192 "2025-09-08T07:47:42Z")
As you may recall, with the release of Mattermost v10, we announced a transition regarding the Playbooks plugin and its availability across our licensing tiers. A notable update for Mattermost v11 is that Professional cu… --- ## [Mattermost Omnibus to reach end-of-life (v11)](https://forum.mattermost.com/t/mattermost-omnibus-to-reach-end-of-life-v11/25175)
**Author:** [@amy.blais](https://forum.mattermost.com/u/amy.blais)\ **Replies:** 0\ **Last updated:** [September 1, 2025, 10:06am UTC](https://forum.mattermost.com/t/mattermost-omnibus-to-reach-end-of-life-v11/25175 "2025-09-01T10:06:04Z")
Mattermost Omnibus will reach end-of-life with the final release v10.12 (September 2025). Starting with Mattermost v11 (October 2025), there will be no more mattermost-omnibus releases as we focus resources on deployment… --- ## [Mattermost v11 Changes in Free Offerings](https://forum.mattermost.com/t/mattermost-v11-changes-in-free-offerings/25126)
**Author:** [@it33\_mattermost](https://forum.mattermost.com/u/it33_mattermost)\ **Replies:** 0\ **Last updated:** [August 23, 2025, 11:25pm UTC](https://forum.mattermost.com/t/mattermost-v11-changes-in-free-offerings/25126 "2025-08-23T23:25:44Z")
Since 2023, we’ve been expanding Mattermost’s mission from open source DevSecOps to supporting national security and resilience communities. To support this broader focus, v11 introduces updates to the free offerings fro… --- ## [Removing Styled Components export for web app plugins (v11)](https://forum.mattermost.com/t/removing-styled-components-export-for-web-app-plugins-v11/25002)
**Author:** [@amy.blais](https://forum.mattermost.com/u/amy.blais)\ **Replies:** 0\ **Last updated:** [August 13, 2025, 6:38am UTC](https://forum.mattermost.com/t/removing-styled-components-export-for-web-app-plugins-v11/25002 "2025-08-13T06:38:13Z")
What’s changing? Beginning in Mattermost v11 (estimated in October 2025), the web app will no longer expose the Styled Components dependency for use by web app plugins. Why are we making this change? As part of ongoing … --- ## [Deprecating a Post Dropdown Menu Component plugin API (v11)](https://forum.mattermost.com/t/deprecating-a-post-dropdown-menu-component-plugin-api-v11/25001)
**Author:** [@amy.blais](https://forum.mattermost.com/u/amy.blais)\ **Replies:** 0\ **Last updated:** [August 13, 2025, 6:35am UTC](https://forum.mattermost.com/t/deprecating-a-post-dropdown-menu-component-plugin-api-v11/25001 "2025-08-13T06:35:10Z")
What’s changing? Beginning in Mattermost v11 (estimated in October 2025), we’re removing the registerPostDropdownMenuComponent hook in the web app’s plugin API in favour of having them use registerPostDropdownMenuAction … --- ## [Sneak Peek: Forum Hero Highlights Launching May 4th!](https://forum.mattermost.com/t/sneak-peek-forum-hero-highlights-launching-may-4th/23112)
**Author:** [@john.combs](https://forum.mattermost.com/u/john.combs)\ **Replies:** 0\ **Last updated:** [May 2, 2025, 1:26am UTC](https://forum.mattermost.com/t/sneak-peek-forum-hero-highlights-launching-may-4th/23112 "2025-05-02T01:26:06Z")
A short time from now… in a forum not so far away… A new hope rises among the community. Starting May 4th, we’re launching a new monthly recognition program: Forum Hero Highlights – May the 4th Be With You Edition! E… --- ## [Clarification on Playbooks in Mattermost v10](https://forum.mattermost.com/t/clarification-on-playbooks-in-mattermost-v10/20563)
**Author:** [@eric](https://forum.mattermost.com/u/eric)\ **Replies:** 0\ **Last updated:** [October 8, 2024, 9:41pm UTC](https://forum.mattermost.com/t/clarification-on-playbooks-in-mattermost-v10/20563 "2024-10-08T21:41:30Z")
Hi Mattermost Community, With the release of Mattermost v10, we’d like to take a moment to clarify some important changes regarding Playbooks and what they mean for our Professional and Enterprise customers. Background … --- ## [Docker in Mattermost Deployments: Updated Recommendations](https://forum.mattermost.com/t/docker-in-mattermost-deployments-updated-recommendations/22646)
**Author:** [@cwarnermm](https://forum.mattermost.com/u/cwarnermm)\ **Replies:** 0\ **Last updated:** [February 25, 2025, 2:34pm UTC](https://forum.mattermost.com/t/docker-in-mattermost-deployments-updated-recommendations/22646 "2025-02-25T14:34:15Z")
Starting with Mattermost v10.5, we no longer recommend Docker for production deployments with more than 200 active users. This decision reflects the challenges Docker presents when scaling, maintaining reliability, and e… --- ## [What's Next for Mattermost Boards](https://forum.mattermost.com/t/whats-next-for-mattermost-boards/22446)
**Author:** [@cwarnermm](https://forum.mattermost.com/u/cwarnermm)\ **Replies:** 0\ **Last updated:** [February 4, 2025, 1:36pm UTC](https://forum.mattermost.com/t/whats-next-for-mattermost-boards/22446 "2025-02-04T13:36:19Z")
We’re focusing our efforts on exploring a best-in-class, native task management experience within Mattermost using message properties that allows for dynamic integration of cards across the platform that will eventually … --- ## [Deprecation Notice: iOS 13 and 14 versions](https://forum.mattermost.com/t/deprecation-notice-ios-13-and-14-versions/21845)
**Author:** [@amy.blais](https://forum.mattermost.com/u/amy.blais)\ **Replies:** 0\ **Last updated:** [December 13, 2024, 7:37am UTC](https://forum.mattermost.com/t/deprecation-notice-ios-13-and-14-versions/21845 "2024-12-13T07:37:28Z")
In the Mattermost Mobile App v2.25 (February 14th release), Mattermost will stop supporting iOS versions 13 and 14. Users should update their iOS version to v15.1 or newer before February 14, 2025. Why are iOS versions … --- ## [Deprecation Notice: Server Builds for Microsoft Windows](https://forum.mattermost.com/t/deprecation-notice-server-builds-for-microsoft-windows/21498)
**Author:** [@amy.blais](https://forum.mattermost.com/u/amy.blais)\ **Replies:** 0\ **Last updated:** [November 15, 2024, 6:48pm UTC](https://forum.mattermost.com/t/deprecation-notice-server-builds-for-microsoft-windows/21498 "2024-11-15T18:48:14Z")
In the February 2025 Mattermost release (and next ESR), Mattermost will stop providing official Mattermost server builds for the Microsoft Windows operating system. Administrators should migrate existing Mattermost serve… --- ## [Deprecation Notice: Manual Plugin Deployment](https://forum.mattermost.com/t/deprecation-notice-manual-plugin-deployment/21192)
**Author:** [@amy.blais](https://forum.mattermost.com/u/amy.blais)\ **Replies:** 0\ **Last updated:** [November 5, 2024, 7:44pm UTC](https://forum.mattermost.com/t/deprecation-notice-manual-plugin-deployment/21192 "2024-11-05T19:44:22Z")
In the February 2025 Mattermost release (and next ESR), the Mattermost server will stop supporting manual plugin deployment. Plugins are deployed manually when an administrator or some deployment automation copies the co… --- ## [Hacktoberfest 2024](https://forum.mattermost.com/t/hacktoberfest-2024/20446)
**Author:** [@john.combs](https://forum.mattermost.com/u/john.combs)\ **Replies:** 0\ **Last updated:** [October 1, 2024, 4:55pm UTC](https://forum.mattermost.com/t/hacktoberfest-2024/20446 "2024-10-01T16:55:28Z")
Attention, Mattermost community! :tada: We’re beyond excited to announce that Hacktoberfest 2024 kicks off on October 1st! This year, we’ve taken things to the next level: our Hacktoberfest page has a fresh new look, f… --- ## [Transition to PostgreSQL](https://forum.mattermost.com/t/transition-to-postgresql/19551)
**Author:** [@nab-77](https://forum.mattermost.com/u/nab-77)\ **Replies:** 0\ **Last updated:** [September 9, 2024, 1:51pm UTC](https://forum.mattermost.com/t/transition-to-postgresql/19551 "2024-09-09T13:51:26Z")
Mattermost v10 is almost upon us and this significant milestone is much more than just a version. Our engineers have been working for many years on performance and scale, ensuring that your Mission Critical collaboratio… --- ## [Customer Education Survey: Share your thoughts!](https://forum.mattermost.com/t/customer-education-survey-share-your-thoughts/19389)
**Author:** [@cwarnermm](https://forum.mattermost.com/u/cwarnermm)\ **Replies:** 0\ **Last updated:** [August 26, 2024, 8:49pm UTC](https://forum.mattermost.com/t/customer-education-survey-share-your-thoughts/19389 "2024-08-26T20:49:43Z")
We’re gathering feedback on the effectiveness of our training program and product documentation. Fill out the Mattermost Customer Education Survey by selecting the survey link: Whether you’re new to Mattermost or you … [Next page](https://forum.mattermost.com/c/announce/15.md?page=1)