Matrix 1.16

[turt2live]

Date: Wednesday, September 17, 2025
Previous release: #2163

Preflight checklist (release steps):

• Pin this issue to the repo.
• Ensure the social media account holders are available for the release day.
• Blog post written.
• Check for release blockers that may have been missed.
• Review/fix the changelog.

Release checklist (release steps):

• Branch stuffs.
• Github release artifact.
• Published to spec.matrix.org.
• All links work.
• Publish blog post.
• Announce in #matrix-spec, client developers, HS developers, SCT office, and other rooms as warranted.
• Post to Twitter/Mastodon.
• Close this issue.
• Unpin this issue from the repo.

Known release blockers:

• Specification for MSC4311: Create event availability in stripped state #2207

Additional notes:

• The SCT is specifically reserving the ability to perform an additional, likely off-cycle, release ahead of the Matrix Conference in October.

[turt2live]

Changelog normalization: 671bc67

[turt2live]

https://spec.matrix.org/latest/ -> v1.16
https://spec.matrix.org/v1.16/ -> v1.16
https://spec.matrix.org/v1.15/ -> Historical v1.15
https://spec.matrix.org/unstable/ -> Unstable

[turt2live]

https://matrix.org/blog/2025/09/17/matrix-v1.16-release/

socials are a WIP