It's time for some more Portal for your porthole! Yeah I don't know what that means either. What I do know is that Dark Horse Comics, the folks behind the Mass Effect graphic novel series and others, have just announced their upcoming art book for the critically acclaimed Portal 2. The tome will contain 184 pages of ("mostly") never-before-seen materials and concept art, with commentary and insights from the game's witty writers and artists.
The Art Of Portal 2 debuts October 31, 2012.