On Bloodydisgusting.com they said that Romereo got the green light to make a fourth dead film. How cool is that!
when its officially confirmed I'll agree, BD among other sites has reported enough bogus info to make me doubt.
I read it somewhere else too and I made a topic about it here some days ago. Romero is working on another movie though, called diamond dead and maybe he will start working on his 4th dead movie anytime after that.