v11.3 Docs

[amyblais]

@claude Please update v11.3 Feature Release (January 16th) docs.

These are the files to update:

https://github.com/mattermost/docs/blob/master/source/product-overview/mattermost-v10-changelog.md
https://github.com/mattermost/docs/blob/master/source/product-overview/mattermost-server-releases.md
https://github.com/mattermost/docs/blob/master/source/deployment-guide/server/linux/deploy-rhel.rst
https://github.com/mattermost/docs/blob/master/source/deployment-guide/server/linux/deploy-tar.rst
https://github.com/mattermost/docs/blob/master/source/product-overview/mattermost-desktop-releases.md
https://github.com/mattermost/docs/blob/master/source/product-overview/release-policy.md
https://github.com/mattermost/docs/blob/master/source/administration-guide/upgrade/open-source-components.rst
https://github.com/mattermost/docs/blob/master/source/product-overview/deprecated-features.rst
https://github.com/mattermost/docs/blob/master/source/deployment-guide/software-hardware-requirements.rst
https://github.com/mattermost/docs/blob/master/source/administration-guide/upgrade/important-upgrade-notes.rst

Here is an example PR: #8063

[claude]

Claude finished @amyblais's task —— View job • claude/issue-8586-20251217-0747 • Create PR ➔

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v11.3 Feature Release Documentation Updates ✅

Successfully updated documentation for v11.3 Feature Release (January 16th).

Completed Tasks:

• Read repository guidelines and analyze current structure
• Analyze current v11 changelog structure and release patterns
• Add v11.3 section to mattermost-v11-changelog.md
• Update mattermost-server-releases.md with v11.3 entry
• Update deploy-rhel.rst with v11.3 references
• Update deploy-tar.rst with v11.3 references
• Update mattermost-desktop-releases.md with v11.3 references
• Update release-policy.md timeline
• Update open-source-components.rst
• Update deprecated-features.rst (no changes needed - content driven by actual deprecations)
• Update software-hardware-requirements.rst (no changes needed - v11.3 is feature release, not ESR)
• Update important-upgrade-notes.rst
• Commit and push changes
• Provide PR creation link

Summary of Changes:

Updated 8 files to prepare documentation for the v11.3 Feature Release scheduled for January 16th:

1. mattermost-v11-changelog.md: Added v11.3 section with placeholder structure for release content
2. mattermost-server-releases.md: Added v11.3 to latest releases table
3. deploy-rhel.rst & deploy-tar.rst: Updated download links to v11.3.0
4. mattermost-desktop-releases.md: Added v11.3 compatibility to desktop app v6.0
5. release-policy.md: Extended timeline to include v11.4
6. open-source-components.rst: Added v11.3 server entry
7. important-upgrade-notes.rst: Added placeholder entry for v11.3

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