GDC 2015: This is the final Steam Controller

Valve's spoiled us at this year's GDC, with Steam Machines, HTC Vive and Source 2 getting us more than a little excited. The company also promised us a look at the final version of the Steam Controller, and while it wasn't flaunting itself on the show floor, we were invited behind closed doors to give the new pad a whirl.This is meant to be the final version, although Valve hinted that there might be a couple of tiny tweaks made before now and launch. But this is pretty much the real deal, and w