[Fuzzwah]

I hadn't thought about the possibility that day 3 could be about their VR stuff. Abrash has been beavering away on all that stuff for some time now. It has also been a fair while since he posted anything up on his blog (July 26, 2013): http://blogs.valvesoftware.com/abrash/

[twidlit]

I am sure it will be just 3b or 3c. a VR peripheral would be a long shot but I would be glad to be wrong. :)