Just last week, we brought you word from a studio insider who said that because of difficulty finding locations to shoot in Japan due to weather-related considerations, the James Mangold directed 20th Century Fox film, The Wolverine may now be shot entirely in Canada, and the start of production could be shifted until after Hugh Jackman (Real Steel) completes Les Miserables next spring.

Now, Variety reports that Mark Bomback, the writer for two highly anticipated films that are currently in production, director Bryan Singer’s forthcoming film, Jack the Giant Killer and director Len Wiseman‘s remake of Total Recall has been brought on board to rewrite Christopher McQuarrie‘s screenplay for The Wolverine.

The site also says that the cast will be entirely Japanese and Japanese-American actors except for Jackman, and “a newly-expanded character named Viper, who will be the Caucasian secretary for Japan’s Minister of Justice.”

The Wolverine is slated to hit theaters in 2013.