World War Z is already being made, with Max Brooks at the helm, who SHOULD be. It's his idea.
Diary was just awful, I'm one of the only people that saw it in the theater and it was a waste of money and dropped the average of the other Romero films significantly.
It Sucked. And certainly is the least of his films to deserve any kind of treatment, especially a sequel. I was kind of hoping it wouldn't even make it to DVD, and people would just forget about it... Maybe George could just bury it in some soft peat for a few hundred years...