GNOME Shell + Mutter 40 Beta Released With Wayland Improvements, Overview Redesign
The GNOME Shell 40 Beta brings its redesign to the overview area, out-of-date extensions are now disabled by default, and a wide variety of fixes ranging from crash fixes to general bug fixes.
The full list of GNOME Shell 40 Beta changes can be found via GNOME's Gitlab.
The Mutter 40 Beta changes are also interesting with it now defaulting to starting XWayland on-demand, support for atomic mode-setting, defaulting to the horizontal workspace layout, improved touch mode heuristics, and a variety of other fixes. More details on the Mutter 40 beta changes via this Git commit.