After seeing this in todays Variety..
"Thor, scripted by Mark Protosevich, Zack Stentz and Ashley Miller, centers on a partly disabled med student who discovers his Norse god alter ego, the hammer-swinging Thor."
And feeling it had contradicted a lot of what we have all heard about the direction the movie is going in so far, AICN contacted a...
"100% tested and solid source, someone intimately familiar with the movie Kenneth Branagh is making, and he or she tells AICN Donald Blake is definitely NOT in the movie."
Thats all I have so far I'm afraid. If their source is as solid as they claim it doesn't look good for Thor's human alter ego. And I for one am delighted. Call me a blasphemer id you like, I know its a staple of the classic comics. But I wasn't looking forward to a "This is a job for Thor" scenario with a flash of light..different actor! No thanks.