This is a rumour, could have some truth;
quote:
New Xbox Experience May launch on September 25th
Microsoft will release a dozen new demos after the launch. There will be four new downloadable pieces of content a preview of the GTA DLC. A Mass Effect expansion. Portal and a free map pack for Halo 3.
Microsoft will unveil twelve new games never seen before that will be exclusive or first on the 360. Strangely enough the author only gives out code names for said games. Though they speculate that among them is Assassins Creed 2, Mass Effect 2, a new Conker title, a Rare shooter new franchise, and two new Halo titles.
Nearly finished Lost Od' and got Tiger Woods, prob get Star Wars once finished one or other.