Valve has just sent out the Steamworks API for their new Steam Controller, meaning that developers are now going to be able to start developing specifically with the new control device in mind.
Along with a few notes on the latest Steam group update, Valve also posted the following picture, which shows the controller bindings for Metro 2033, the game that was included with the prototype Steam Machines that were sent out to 300 lucky North American gamers earlier this month.