Ubuntu is not moving TO Gnome
Ubuntu is moving _back_ to Gnome.
"Users upgrading between LTS releases will get their first taste of Ubuntu with GNOME come April."
First? I can't remember how many times I've installed Ubuntu-with-Gnome, decided I hate the look, and gone back to Kubuntu (probably about every second release since Warty).
Ubuntu used Gnome for years before they started on Unity.