UI & ADA Changelog

This changelog tracks User Interface (UI) and Accessibility (ADA) changes across Mattermost releases. Administrators can use this page to easily see what changed in the UI from their current version to the one they’re upgrading to, and track ADA improvements release to release.

Changelog

Version	Change Description
v11.8	(UI) Added a new keyboard shortcut, Shift + ESC, that marks all channels, threads, and direct messages as read for a team on webapp / desktop app.
v11.8	(UI) Added an overflow menu for channel bookmarks when the bookmark bar runs out of space. Bookmarks can be reordered via drag-and-drop between the bar and the overflow menu, or via keyboard (Space to select, arrow keys to move) on webapp. Replaced react-beautiful-dnd with @atlaskit/pragmatic-drag-and-drop.
v11.8	(UI) Added an unread badge to Recaps, displayed in red if the recap failed.
v11.8	(UI) Added managed channel categories for Channel Admins to enforce sidebar organization across teams.
v11.8	(UI) Added per-channel classification assignment and banner integration for webapp/desktop app.
v11.8	(UI) Added support for CPA Display Name for user-facing labels of user attributes.
v11.8	(UI) Changed the Invite People modal to allow pasting any text, not only valid email formats.
v11.8	(UI) Standardized many buttons throughout the app, which may result in minor UX changes.
v11.8	(UI) Updated the Enable Testing Commands user interface to explicitly warn that EnableTesting must never be used in production.
v11.8	(UI) Changed the mobile view search box to only autofocus when the search button is pressed (reported on mobile browser).
v11.8	(UI) Improved the Default “Report a Problem” behavior to open a support ticket via email with metadata for licensed servers, and redirect to the Mattermost forums for free edition in webapp / desktop apps.
v11.8	(UI) Added support for system-scoped properties — property fields and values that attach to the Mattermost instance itself.
v11.8	(UI) Added the ability to define a property attribute once and reuse it across different object types (e.g., users, channels).
v11.8	(UI) Exposed the DefaultCategoryName to the user interface so admins can add, edit, and remove it easily.
v11.8	(UI) Moved interactive dialog date/datetime properties into datetime_config.
v11.8	(UI) When a channel is shared or unshared with a remote, a system message will now be shown.
v11.8	(UI) On new installations using Elasticsearch or OpenSearch, search now includes public channels the user is not a member of by default.
v11.8	(UI) Added support for incoming webhooks to define a root_id to create posts in a thread.
v11.8	(UI) Updated membership policy user interface copy in the System Console and public channel settings to clarify qualifying-user requirements and auto-add behavior.
v11.8	(UI) Hid redundant “Download Apps” links and onboarding download reminders when Mattermost runs inside the Desktop app.
v11.7	(UI) Message attachment footers now support full Markdown rendering, including bold, italic, links, and emoji.
v11.7	(UI) Changed the Browse Channels modal and ~channel autocomplete to prioritize channels with a matching display name.
v11.7	(UI) Added an “Open in new tab” button to the Product Switcher menu.
v11.7	(UI) Substring matching is now allowed when searching channel members in the member sub-panel in a channel.
v11.7	(Accessibility) Improved accessibility of thread list menus.
v11.7	(UI) Improved autocomplete while typing in Korean and using Firefox.
v11.7	(UI) Updated license renewal and expiry notification emails with refreshed branding, copy, and layout.
v11.7	(UI) Added the ability to open channels in a separate popout window, with full channel and right-hand side functionality.
v11.7	(UI) Dropped support for JS features required by browsers over three years old.
v11.7	(UI) Renamed user-visible references from “Custom Profile Attributes” to “User Attributes” across the admin console, error messages, and server translations.
v11.7	(UI) Added the ability to handle from which remotes a channel is shared from the channel settings user interface.
v11.7	(UI) Channel banners are now shown in thread views.
v11.6	(UI) Added support for Default Agent in suggestions and integrated Agents into the App Bar.
v11.6	(UI) Improved the reliability of AI recap summarization by using structured JSON output from the LLM.
v11.6	(UI) Added a new feature of creating teams and channels using anonymous URLs so the channel and team name are not revealed in the URL. Requires Enterprise Advanced license.
v11.6	(UI) Added popouts for Recent Mentions, Saved Messages, and Search Results via the right-hand side.
v11.6	(UI) The emoji picker on web and Desktop now inserts unicode emoji characters into the message composer instead of shortcode text.
v11.6	(UI) Renamed Enterprise Advanced feature Content Flagging to Data Spillage.
v11.6	(UI) Added a contextual note in Security Settings that explains how Google SSO can synchronize usernames and emails, shown alongside the Sign-in Method details.
v11.6	(UI) Renamed SlackAttachment and SlackAttachmentField types to MessageAttachment and MessageAttachmentField. Old names are maintained as deprecated aliases for backward compatibility with plugins.
v11.6	(UI) Posts created by integrations using Slack-compatible attachments (webhooks, bots, plugins) are now fully searchable in Elasticsearch. Previously, only the attachment text field was indexed. Now title, pretext, fallback, and field content are also indexed. A bulk re-index is required after upgrade to apply this to existing posts.
v11.6	(UI) Added timezone support and manual time entry for Interactive Dialog datetime fields.
v11.6	(UI) Added sub-day relative date patterns (H/M/S) for datetime dialog fields, enabling min/max constraints with hour, minute, and second precision.
v11.5	(UI) Added support for auto-translations. Initial Beta release. Requires Enterprise Advanced license.
v11.5	(UI) Added the ability for web app plugin code to be loaded asynchronously.
v11.5	(UI) AI Rewrites now includes some context from the most recent messages in the thread to help provide better rewrites.
v11.5	(UI) Available AI Agents are now shown in the @-mention autocomplete menu, regardless of channel membership.
v11.5	(UI) Added the ability to access channel settings and rename a channel from the channel info right-hand sidebar.
v11.5	(UI) Added tooltips to action buttons, and action errors are now displayed.
v11.5	(UI) Updated the signup flow to replace the newsletter opt-in with a checkbox to agree to the Acceptable Use Policy and Privacy Policy.
v11.5	(UI) Added back offline Help documentation accessible from the message composer.
v11.5	(UI) Added new icons for archived and private channels.
v11.5	(Accessibility) Fixed an issue where the profile status menu disappeared at higher zoom levels or at resized window on mobile view.
v11.4	(UI) Updated illustrations and visual design for the initial loading screen, preparing workspace flow, IP filtering empty state, and admin console feature discovery panels.
v11.4	(UI) Added adjustments to thread and right-hand side plugin pop-out titles.
v11.4	(UI) MS Teams and Outlook on mobile no longer display a “Your browser does not support notifications” warning banner when running Mattermost embedded in those apps.
v11.3	(UI) Added Korean language support and upgraded Korean translations from Alpha to Official.
v11.3	(UI) Added pop-outs for right-hand-side (RHS) plugins.
v11.3	(UI) Removed outdated system notices.
v11.3	(UI) Removed the Collapsed Reply Threads tutorial.
v11.3	(UI) Added support for triggering user mentions using the full-width at-sign (＠) in addition to the standard half-width at-sign (@), improving the experience for users of Japanese input methods.
v11.3	(UI) Added the ability to schedule posts in 15-minutes interval.
v11.3	(UI) Updated Giphy SDK from 8.1.0 to 10.1.0.
v11.3	(UI) Custom Profile Attributes now always return a set of default attributes if they’re not set.
v11.3	(UI) Added a new webapp plugin component registerSidebarBrowseOrAddChannelMenuComponent, which allows users to add options to the BrowseOrCreateChannel menu.
v11.2	(UI) Enabled thread popouts in the browser.
v11.2	(UI) Reduced the channel banner height.
v11.2	(UI) Improved license and plan name clarity throughout the user interface. License settings and the About modal now display specific plan names (Professional, Enterprise, Entry) instead of the generic “Enterprise Edition” label, reducing confusion between edition and plan terminology.
v11.1	(UI) Added support for standalone windows pop-out. Threads can now be popped out to its own window in Desktop.
v11.1	(UI) The desktop app version is now shown on the About modal, allowing clicking to copy both the server and desktop app versions.
v11.1	(UI) Removed Mattermost MS Teams Sync plugin from pre-packaged plugins.
v11.1	(UI) Downgraded French language support from Beta to Alpha.
v11.0	(UI) Removed Playbooks v1 from pre-packaged plugins.
v11.0	(UI) Updated the library used for customizing scrollbars.
v11.0	(UI) Increased page size when retrieving posts in channels with high number of hidden messages.