This image apparently comes from one of the future issues of the new Green Lantern comic book, which is offering a sneak peek at the villain. It wasn't stated when this particular issue would be released in stores, but here's a description of the Parallax character:
"An ancient horror, Parallax the living embodiment of fear, a demonic parasitic entity which would travel from world to world, causing entire societies to destroy themselves out of fear and paranoia. It is known to ravage planets and strike terror into the hearts of even the Guardians of the Universe."
Green Lantern was released June 17th, 2011 and stars Ryan Reynolds, Blake Lively, Peter Sarsgaard, Mark Strong, Temuera Morrison, Jenna Craig, Jon Tenney, Mike Doyle. The film is directed by Martin Campbell.