The third game using Unreal Engine 3, after Lili and (THRED), has been teased by BitMonster Games. It is still not officially announced, but seems to be a shooter-ish game. According to BitMonster Games, the game has been in development for about 1.5 months. No other details have been revealed.
That one picture has already sparked my interest so I'll be keeping up with this. Not expecting to hear much for a while though considering it's only been in development a month and a half.