EXCLUSIVE: The studio says it never officially has given the sequel a production state date. Fox was looking at a Fall 2011 start date for the Christopher McQuarrie script for Wolverine 2 starring Hugh Jackman and directed by James Mangold. But now that may push back to Spring 2012. The screenplay mostly takes place in Japan. But studio insiders tell us it’s hard finding just where to shoot in Japan these days because of weather-related considerations. Now the location might switch to Canada or become a combination of the two countries. But we’re also hearing that the start date will wait until after Jackman finishes making Les Miserables. There’s no question that 20th Century Fox wants the pic badly and has been trying to get its sequel to the X-Men spinoff The Wolverine rolling for quite awhile now. In June it landed director Mangold after Darren Aronofsky bowed out in March, ending one of the most competitive contests among Hollywood helmers for a major studio film. That set up the studio thinking that it could begin production in the fall.