Left 4 Dead 3 in development? [Update]

Update: A countdown clock on a mysterious website has appeared, revealing that Left 4 Dead 3 announcement is imminent. The countdown clock ends on the second day of Gamescom 2013, which would be a good moment for a game reveal. That said, the site’s domain is dubious and it’s unlike Valve to reveal a game in this manner.

Original story: While not coming from an official announcement, it appears that Valve is currently working on the next instalment in the co-op zombie-shooter series, Left 4 Dead.

The speculation about the existence of Left 4 Dead 3 comes through a picture that was taken of Valve’s internal changelog.

The picture was taken by a Dota 2 player, who was touring Valve’s Bellevue-based offices as part of The International 3 Tournament.

On top of the possible development of Left 4 Dead 3, the changelog also reveals Source 2 as another current project.

Valve co-founder Gabe Newell has previously spoken about the next instalment of the Source engine, but Newell has been extremely tight-lipped on another Left 4 Dead sequel, or any in-development game for that matter.