Reading Jessica Alba's (Invisible Woman) words it sounds like he could be as she has described The Surfer as a hero/villain:
"We start Fantastic Four 2 in August. The four of us learn that there are other people out there with superpowers, and the Silver Surfer appears as a villain/hero. And another villain comes in as well," Alba's Fantastic News (IGN.com; 1st June 2006)
Ain't It Cool also has this poster picture up (but it doesn't give much away...)
