http://www.bigbadtoystore.com has this listed in stock now, but it seems kinda spoilerish for the Green Lantern movie, so consider yourself warned.
Green Lantern 4" The Final Showdown: Hal Jordan Vs. Parallax Two-Pack
The monstrous entity of fear, Parallax, is ready to wreak havoc on Earth unless Hal Jordan can stop him! This 2-pack of Green Lantern figures recreates the exciting final battle in the film. Parallax figure comes in 10-inch scale with tentacles that move when he rolls across a flat surface. He also features a secret claw attack that can extend, grab his prey and launch it back out. Exclusive Hal Jordan figure is in 4-inch scale with bladed construct arm to fend off the monster. Can Hal save Earth from destruction?