I don't see a contact of any kind for this but the Casting Call has been annouced!
This got to be the best place for this.
http://coronacomingattractions.com/scoops/february-18-2009-thor-casting-notice-thor-character-movie
Thanks to one of our longtime scoopers, Coming Attractions has been given the casting call notice for the one and only Thor. What you're about to read is the physical and personality traits of what the movie's producers are looking for in their leading man. This information comes directly from the production and it provides an insight into what Branagh and the producers want to see in the actor that plays the Norse god of thunder.
Male MUST BE MID-LATE 20'S and SIX FEET OR TALLER. LEAD.
Physically powerful, very handsome, occasionally egotistical, petulant, and wild. A natural warrior with a quick charming wit who must be genuinely and severely humbled before becoming the compassionate, mature hero of our film.
The start date of filming is given as July and the wrap is September.