Rich Johnston over at Bleeding Cool adds a dash of speculation into the mix, stating that Patrick Dempsey(Can't Buy Me Love) could be in line for the role. Dempsey has stated his desire to play the part in the past, and is apparently already in Disney's good graces thanks to his performance in Enchanted
Dr. Strange is a character I've always found interesting on the pages of any comic he appears in, although I have serious reservations about his viability as a successful movie character. His backstory isn't particularly interesting(former playboy doctor injures hands and turns to magic), his powers allow for him to do pretty much anything, and his personality is generally aloof. It's one reason why he's never had a successful comic book series of his own. Adding Dempsey to the mix will bring in viewers, but I think his mere presence makes the movie campy. It's already going to be a tough sell.