some are wondering if it's video of an upcoming golf title featuring the Xbox 360 characters. At E3 2009, Microsoft revealed the casual racing title Joyride -- a free, upcoming XBLA game featuring Avatars -- so it isn't out of the question for Avatars to star in another casual game.
The footage showcases Avatars enjoying a rousing game of golf, but still looks very early in development (if it even is). Perhaps it is an actual upcoming game, but it could also be some an Avatar update to the XBLA title 3D Ultra Minigolf or even some XNA-based genius. Time will tell on this rumor.