But they are still dropping Gnome Classic (Fallback Mode).
Having the GNOME project support a set of Shell extensions that provide some of the functionality of GNOME 2 still doesn't help their users with hardware that cannot support 3D acceleration via GPU or the llvmpipe CPU scheme they've adopted; those folks are swinging in the wind now.
This completely smacks of the GNOME devs *finally* conceding to user discontent with the direction of the OS, and in doing so effectively telling a large percentage of said disgruntled users "We really think you should be running XFCE anyways, you're only holding back the 'progress' going on over here in GNOME-land, we've got our own OS to build now, or didn't you hear?"
It may sound nice at first glance, but I think it's more about saving some public face than actually addressing the oft-voiced concerns of GNOME users, former and current.
GIGABYTE GA-P35-DS3L LGA 775, Xeon 3.0 Ghz Core 2 Duo, 4 GB DDR2-800, EVGA 8800GT, WD Caviar 250 GB SATA-2
Ubuntu 12.04 LTS, Crunchbang Waldorf, Mint 13 w/Cinnamon, Elementary Luna Beta, Puppy