I don't think this was cc'd to the release team when it was reassigned, so quoting full text below for the release team's reference:
On Tue, 24 Oct 2023 at 14:09:06 -0400, Jeremy Bícha wrote: > We will be ready to do the GNOME Shell/Mutter 45 transition once > magpie is accepted from Debian NEW and budgie-desktop switches to it. > I'm setting the moreinfo tag until that happens. > > The remaining sourceful re-uploads from Experimental are: > > * mutter > * gnome-shell > * gnome-shell-extensions > * gnome-remote-desktop > > And these extensions, so far: > * gnome-shell-extension-appindicator > * gnome-shell-extension-arc-menu > * gnome-shell-extension-caffeine > * gnome-shell-extension-dash-to-panel > * gnome-shell-extension-dashtodock > * gnome-shell-extension-desktop-icons-ng > * gnome-shell-extension-espresso > * gnome-shell-extension-gsconnect > * gnome-shell-extension-hide-activities > * gnome-shell-extension-kimpanel > * gnome-shell-extension-runcat > * gnome-shell-extension-shortcuts > * gnome-shell-extension-tiling-assistant > * gnome-shell-pomodoro > * gpaste > * workrave > * yaru-theme > > And then any remaining extensions in > https://udd.debian.org/cgi-bin/bts-usertags.cgi?user=pkg-gnome-maintainers%40lists.alioth.debian.org&tag=gnome-shell-45 > will need to be either fixed or temporarily kicked out of testing > to let the transition through. > > We can provide a specific list of extensions to remove from Testing > when we get to that point in the transition. > > Notably, every GNOME Shell extension needs to be adjusted for the new > ESM import style. It is not possible for extensions to be compatible > with both GNOME Shell >=45 and <=44 without some source code changes. > For more details of required changes, see > https://gjs.guide/extensions/upgrading/gnome-shell-45.html > > The tracker for this transition is > https://release.debian.org/transitions/html/gnome-shell-45.html