This week prior to the GNOME 3.10 release
also marked the release of GNOME-Panel 3.8 and GNOME-Flashback-Session 3.8. The "GNOME Flashback" project is about revitalizing the GNOME 3 "fallback" session experience found in earlier 3.x releases for cases where no 3D hardware acceleration was available.
The GNOME Flashback Session 3.8.0 release ships a session descriptor and wrapper session for the GNOME Flashback experience that is similar to what used to be available on Debian/Ubuntu with regard to a Metacity-powered GNOME-Panel-based desktop.
GNOME Flashback has been ongoing since late 2012 for reviving the fallback experience and is trying to collaborate with the MATE team, among others. GNOME-Panel 3.8 is a port of the classic GNOME-Panel to GNOME 3 with GTK+3 support.
More details can be found by their mailing list announcement