Half-Life 2: Episode 3

Half-Life 2: Episode 3 concept art has supposedly been leaked.

A gallery posted by Valve Time claims to contain concept images from the anticipated sequel.

Though the images were sent in by an anonymous source, it is believed that they may be legitimate dating back to 2008. Because of their age, it is possible that they do not indicate the current state of Half-Life 2: Episode 3 or Half-Life 3.