Latino Review broke the story "I had a first hand eyeball witness of Kenneth Branagh eating dinner at Blairs today accompanied by a young Blonde actor who i recognized from HBO's awesome miniseries Generation Kill that was on a year or so ago. I had no idea what his name was but I got home today and Googled him, his name is Alexander Skarsgård. I have no idea if he actually is Thor or not, maybe he's being considered, maybe he and Kenneth are just friends. However, it seems likely he is being considered since he's a young Blonde actor and seems to fit the description of the character. Two other men were with them but I didn't recognize either of them. I know it's speculative at best, even so I thought you'd wanna know.
Could this be the actor we have all been waiting for to swing Thor's hammer? Or is this the actor that will portray Loki? I think he is following more in Loki's footsteps rather then Thor's. The studio has not made any official comment but confirmation should be coming soon due to the production schedule of the film.