Peter K?nig has been a big name in producing concept art for some huge projects over the years. He's been at Valve since 2008 as a concept artist, modeler, texture artist working on Dota 2, Left 4 Dead 2 and other projects. His website now shows a host of interesting new Left 4 Dead 2 concepts as well as a space ship with SOB 49 written on the side.
Late last year, the Dota 2 leak contained some info on this previously unknown Valve IP 'SOB' which suggested it was a game set in space with space ships of some kind. A picture on Peter's blog in 2011 (now removed) can be seen below in comparison to the updated image now on his website Hard Surface / 3D Concepts section. A scrapped project or soon to be announced?
UPDATE:
Peter K?nig responded to an email of mine (smash) about the mysterious concept art that was found on Valve's wall in early 2011, and I would like to share it. I asked him if that art was for practice or production, and this was what he said:
![[IMG]](http://www.halflife2.net/wp-content/uploads/2012/02/sob_ship_small.jpg)