All of this drops on August 11. Games On Demand titles confirmed for 8/11 are as follows: Assassin’s Creed, BioShock, Lego Star Wars: The Complete Saga, Mass Effect and Sonic the Hedgehog. We’ll have to wait for the next update to get Facebook, Twitter, Last.fm, Zune Video and 1080p Instant On. That is all.
Sounds like Microsoft is holding out on all these functionality tweaks to the XBOX 360 until the holiday season or sometime thereafter. Bad move Mr. Gates!
I wish they would add support for .mkv files. :(