If you're itching to return to the world of Heroes, you'll have to wait until at least this summer.

Creator Tim Kring tells Zap2It that writers are already working on the NBC revival, Heroes Reborn, but production won't begin for another couple of months.

"The train's moving down the road," Kring says. He wouldn't comment on who might be returning to the series though. "I can't announce anything. It's all locked -- it's Fort Knox." At this point, the only actor officially hopping back on the Heroes train is Jack Coleman, who played Noah Bennet.

Airing from 2006 to 2010 on NBC, Heroes focused on characters who developed supe powers like invisibility, invulnerability, flight and time manipulation. The show also starred Hayden Panettiere, Milo Ventimiglia, Adrian Pasdar, Masi Oka, Christopher Eccleston, Ali Larter, Zachary Quinto and Greg Grunberg.