In New Interview with MTV James Mangold says 90 percent of film Is In Japan and there are no direct references to other X-Men films
http://www.mtv.com/news/articles/170...-preview.jhtml
The big question Is where the other 10 percent of film take place.we a bit takes place In Canada but Is that 10 percent entirly the leaked set set pics of bearded Wolverine
before going to Japan.As for how Famke Janssen makes her appearance.WHo knows.