James Patterson's Zoo hasn't even been released yet, but Yen Press already has a graphic novel adaptation of it in the works. Andy MacDonald revealed on his blog last night that he's been working on it, and Yen Press is showing off promotional materials for it at its booth at Comic-Con International in San Diego. According to the description on Patterson's website, Zoo is about:

All over the world, brutal attacks are crippling entire cities. Jackson Oz, a young biologist, watches the escalating events with an increasing sense of dread. When he witnesses a coordinated lion ambush in Africa, the enormity of the violence to come becomes terrifyingly clear.

With the help of ecologist Chloe Tousignant, Oz races to warn world leaders before it's too late. The attacks are growing in ferocity, cunning, and planning, and soon there will be no place left for humans to hide. With wildly inventive imagination and white-knuckle suspense that rivals Stephen King at his very best, James Patterson's ZOO is an epic, non-stop thrill-ride from "One of the best of the best." (TIME)

Yen Press has published several graphic novel adaptations of Patterson's books aimed at younger readers, including Maximum Ride and Daniel X, but I believe this is the first "adult" book of his the company will adapt. According to Amazon, it comes out in November, two months after the prose novel.