Here is some more info about it:
"Even though former Marvel Studios chief executive Avi Arad let the cat out of the bag earlier this year, The Incredible Hulk director Louis Leterrier made it official today at the San Diego Comic-Con that Abomination will indeed be the villain for the follow-up.
"He's capable of amazing feats," Arad said previously, describing the former Yugoslav spy who has mutated into a 980-pound freak of terrifying strength and unpleasant demeanor.
Newly named The Incredible Hulk director Louis Leterrier (the "Transporter" films, "Unleashed") told attendees that his vision for Hulk would still focus on Bruce Banner's hate for the monster inside him and carry a tone closer to that of the television show. Ari Arad added that the new film would focus more on the Hulk as hero theme.
"This is Marvel's horror movie," said Leterrier "It's Frankenstein meets Jekyll and Hyde with a little bit of Edward ScissorhanRAB."
As for characters returning from the first film, Leterrier confirmed that General Ross will be there. Avi Arad addded that filming will start in April, 2007."