Following last week's [1]GNOME 49 release , This Week in GNOME is out with their latest weekly summary of all interesting GNOME developments. Notable now for this post-49.0 time is libadwaita adding an adaptive sidebar widget.

AdwSidebar has been added to libadwaita as an adaptive sidebar widget. There is also AdwViewSwitcherSidebar as a view switcher variant. These libadwaita additions are intended to be a replacement to GTK's GtkStackSidebar widget.

Those curious about this new libadwaita adaptive sidebar widget and other GNOME changes post-49.0 can see [2]This Week in GNOME for all the details.



[1] https://www.phoronix.com/news/GNOME-49-Released

[2] https://thisweek.gnome.org/posts/2025/09/twig-218/