The Gears of War 2: All Fronts Collection is the ultimate Gear of War 2 expansion pack but it is bit of an odd duck at retail at July 28th. It is only going to be in stores as a card that you will plunk down $19.99 for and then take it home and enter the download code in your Xbox and the good stuff will automatically download over a series of tubes called the internets. Basically Gears of War 3 is unofficially confirmed. They could not officially say that they were working on Gears of War 3 but there is a big team at Epic Games and they are probably working on a new action packed game (doubt they are making a dating sim or interactive pony adventure).
More info: seattlepi