Greg Pak, who was the writer for the awesome Planet Hulk storyline, announced that he was taking the comic story and putting it into novel form and the book will come out in October. Here is a link where you can pre-order via Amazon. The description of the book says:
Betrayed by Earth’s heroes and exiled into outer space, the man-monster Hulk has landed on the distant planet Sakaar, ruled by the tyrannical Red King. Sold into slavery, Hulk becomes the Green Scar, the planet’s mightiest gladiator – but his new masters get more than they bargained for when he forges a bond of brotherhood with his fellow fighters: crafty insectoid Miek, the horrific Brood, wise rock-man Korg, Shadow Warrior Hiroim, noble-born rebel Elloe and her loyal guardsman Skee. Together, these gladiators start a revolution that could change their entire world – or destroy it. It’s a savage sci-fi fantasy by award-winning writer Greg Pak, guest-starring the Silver Surfer!
There can never be enough Planet Hulk merchandise to go around!