Thus far, only a handful of folks internal to Valve have gone hands-on with TF2's VR Mode, and it's clear the hardware team is eager to get more feedback.
And then Valve's internal hardware prototypes popped up, confirming what we've heard murmurs of for months: the company's head down on creating a PC for your living room.
Even if the Steambox initiative fizzles, there's always the massive ongoing success of Steam's digital storefront to fall back on. 2013 may be the year that Valve attacks, but it's not just the company's internal hardware projects that are up for the challenge.