Ahead of the [1]GNOME 48 stable release due out later this month, tagged now is the Mutter "48.rc" release candidate milestone. While the feature freeze passed last month, there has been a lot of last minute improvements merged for Mutter to squeeze into this GNOME 48 release.

GNOME Mutter 48.rc is much heavier than normal for Mutter release candidates. There has been a number of Wayland improvements to land including the much anticipated HDR / color management protocol handling. Plus the Canonical/Ubuntu-led dynamic triple buffering code was finally merged and more:

- Support for Wayland's Presentation Time v2 protocol.

- [2]Support for the Wayland Color Management protocol as part of enabling nice HDR support on the GNOME desktop.

- [3]The long-awaited dynamic triple buffering support was finally merged.

- Support for [4]Wayland's cursor shape protocol with cursor_shape_v1.

- Improving window placement when centering new windows and the default behavior to center new windows by default.

- Defaulting to sticky drag lock.

- Implementing a11y keyboard monitoring support.

- Fixing DMA-BUF support for headless sessions.

- Adding luminance settings.

- Various crash fixes and other bug fixes.

More details via [5]this Mutter commit . The GNOME 48 release candidate will be announced soon while the GNOME 48.0 stable release is expected to occur on 19 March.



[1] https://www.phoronix.com/search/GNOME+48

[2] https://www.phoronix.com/news/GNOME-wp_color_management_v1

[3] https://www.phoronix.com/news/GNOME-48-Triple-Buffering

[4] https://www.phoronix.com/news/GNOME-Mutter-Cursor-Shape

[5] https://gitlab.gnome.org/GNOME/mutter/-/commit/d56904f2996bb25db4d2a58c6ee9c3b8e72349fd