Saw this tread on Neo Gaf and the tweet.
http://www.neogaf.com/forum/showthread.php?t=506739

https://twitter.com/idBrianHarris/status/286996143546712065

Quote: @idBrianHarris What's on your plate now that BFG is out and stable? Rage SDK? Doom 4?

@qartar currently home taking care of a new baby girl. When I get back, I'll help port the big project to new platforms.