The first game he talked about was Hyrbid, 5th Cell's jetpack-driven multiplayer shooter. This was followed by a brief vignette of Deadlight, the Tequila Works side-scroller set in a post-apocalyptic world. Next was Tony Hawk's Pro Skater HD from Robomodo, followed by Wreckateer for Kinect. Rounding out the list is Dust: An Elysian Tale.
There's no word on when Summer of Arcade kicks off – summer, right? – but considering Tony Hawk's Pro Skater HD drops in on July 11, at least we have some idea of the Summer of Arcade window.