Gearbox has been hinting at something big for a while now. Not sure if that will be 360 exclusive though or even come out this year. Halo Chronicles might get some info released. Anything from Rare should cause some interest. Some more games along the lines of 1 vs 100. Probably some more NXE innovations, Zune Marketplace, etc. Should be a pretty interesting year. Also, don't forget the new stock piling of internal development talent inside of MGS. Probably see some hints at what they are developing.