From facepunch:
"An inside source has confirmed that SOB (Valve's new IP) is an unannounced game entitled Stars of Barathrum (working title). Plays like privateer/freelancer but also with the ability to command larger cruisers and capital ships. It's a very vast and open-world game where you choose your own adventure, a lot of internal resources are being put into SOB."
This is interesting as if...