Yeah, I'm currently testing out the new Xbox update that should be coming out soon. The one with Facebook, Twitter, Zune marketplace and Last FM.
Zune Marketplace has nothing of interest. You can actually buy movies and or rent movies. You can do the same for music I'm sure. Twitter is just twitter, and Facebook is basically alright. You can't read messages on Twitter or facebook though.
Last FM is my favorite though. Some problems with it atm are; You can't listen to music on the dashboard or while in game, you can't check messages, look at friends profiles or stations, and so on. But yeah, it's my favorite part of the update. So, who else got into this preview beta?