Fifa 13
Medal of Honor: Warfighter
Crysis 3
Simcity
Need For Speed: Most Wanted
This games are already confirmed to be shown at Gamescom. But some EA guy has almost confirmed Overstikes appereance.
http://www.gamepro.de/xbox/spiele/xbox-360/overstrike/news/overstrike,47929,2568999.html
Well nothing special so far. Just already confirmed and shown games. But I am eager to see some Overstrike gameplay and maybe they will reveal Dragon Age 3.