v4.0.0

[4.0.0] 13th November 2025

Matrix Dart SDK 4.0.0 comes with support for polls, adds first bits towards OIDC and improved
support for spaces and threads.
This release also fixes a major performance leak while updating user device keys in the sync loop.
Especially for larger accounts this should improve the performance a lot.
v4.0.0 It comes with some breaking changes:

Migration guide

• Client.checkHomeserver() now returns a fourth value. You can just ignore it if you don't need auth_metadata.
• RelationshipType.reply has been removed in favor of Event.inReplyToEventId() where you can set if you want to ignore fallbacks or not. This makes it easier to differenciate fallback replies and replies inside of a thread.

All changes

• feat: (BREAKING) Discover OIDC auth metadata on Client.checkHomeserver() (Christian Kußowski)
• feat: Allow init with access token (Christian Kußowski)
• feat: Implement msc 3381 polls (krille-chan)
• feat: Use small versions of bullet point characters (Kelrap)
• fix: Correctly remove space child (Christian Kußowski)
• fix: Set join rules with knowk_restricted and multiple allow condition room ids (Christian Kußowski)
• refactor: (BREAKING) Replace Event.relationshipType and Event.relationshipEventId with Event.inReplyToEventId() for replies. (Christian Kußowski)
• refactor: Add option to always call auth metadata (Christian Kußowski)
• refactor: Escape HTML tags before markdown rendering (Christian Kußowski)
• refactor: Make direct chat getter type safe (Christian Kußowski)
• refactor: Simpler update user device keys (Christian Kußowski)
• chore: Cache auth metadata response in client (Christian Kußowski)
• chore: Remove flutter from CI (Christian Kußowski)