Looks like this is the year that various distros will shake things up in order to hit a sweet spot with users:
Ubuntu with Unity
Gnome 3 on the rest
and now this: http://digitizor.com/2011/06/09/fedora-16-btrfs/
Ubuntu with Unity
Gnome 3 on the rest
and now this: http://digitizor.com/2011/06/09/fedora-16-btrfs/