Jump-jets and chainguns are going to be tested to their limit between October 26th-29th as Hawken throws itself into the oily maelstrom of closed beta testing. The sign-up thingum is here. At some point thereafter there will be an open beta, I believe, before the game of robot-combat becomes a fully-fledged free-to-play affair. If you need reasons to be excited about all this then I'd recommend having a read of Adam's Hands On experience with the game, and watching this game footage.
Entirely unrelated Daft Punk track posted below.