Talking to Comic Book Resources, Quesada talked about meeting with Branagh and Marvel Studios president Kevin Feige to map out the movie:

[Branagh] has immersed himself in [the comics]... He was talking about characters and villains that even I was going, like, who was that?, y'know. But if you're a Thor-head, you're going to go, oh right... So it was wonderful to hear this stuff. He wasn't just concerned about Thor, but he also understood going in, from the beginning - because we established very early on... Well, at the end of the Iron Man movie, but very early on [in the process], that there's going to be other movies that become part of this tapestry. This is essentially our Star Wars, our universe is our Star Wars, and he understands that his Thor movie is one of the legs of this table that will interplay with an Iron Man movie down the road, or the Avengers movie down the road.

Of course, does being faithful to the comic mean that Thor will be a God once again? Quesada didn't even hint in that direction, wisely.

Thor is being prepped for a 2010 release.

Joe Quesada, Part 1 [Comic Book Resources]

McKidd told IGN that "there's been a lot of back and forth" with Marvel about his taking on the role of the Thunder God in both his upcoming solo movie and 2011's Avengers project, as well as confirming that Branagh will be directing Thor, something that Marvel has not officially confirmed.

Rome and Trainspotting veteran McKidd isn't the first actor to have mentioned being offered the role; James Bond Daniel Craig has previously talked about turning down the part due to his Bond duties.

McKidd Talks Thor [IGN]