This release is significant: it adopts Swift Concurrency (which you shouldn't see), Liquid Glass (which, despite the transparency, you should see), and supports macOS 26 (as a minimum). From a UI perspective:
The Sidebar adopts standard Liquid Glass behaviours which means it floats and allows timeline content to slide underneath
Unread indicators are no longer backed by a filled capsule. They are now just a simple unread count
The Toolbar has seen a minor reorganisation which moves the sidebar toggle from the timeline into the sidebar. In addition, toolbar buttons adopt the standard Liquid Glass button look-and-feel
Tending to the dark corner of the Lucida Grande garden, the About window has been redesigned
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