StickSkills: "Valve recently opened the public partners side of SteamWorks and it appears as that may have backfired. A user of the website did some brute forcing and stumbled upon a SteamWorks page for Left 4 Dead 3."
via N4G: pc news feed http://n4g.com/news/1269314/rumor-left-4-dead-3-found-on-steamworks
via N4G: pc news feed http://n4g.com/news/1269314/rumor-left-4-dead-3-found-on-steamworks