I would really love to see the Gears of war 2 and 3 coming to the Xbox one next update for the 360 game becoming Backwards compatibility due to the remastered version coming to the xbox not being the other Gears 2 and 3.
The games are being decided by the community. If you go onto this page:
xbox.uservoice.com/.../298503-game-requests you can vote for the titles you would like to see come to Xbox one. The most popular will then be integrated into backwards compatibility in the future.
Microsoft seem very supportive of this and want many games to be backwards compatible so if there is not a game yet that you have/would like to play then vote for your game in the above link and hold tight!