Patrick Stewart gave a recent interview:
http://www.superherohype.com/news/x-mennews.php?id=2600 Patrick Stewart radio interview in which he mentions that 20th Century Fox is telling him they aim to start production on X-Men 3 in June or July of this year.
He added that "it will probably be a little bit later than that, but they are holding to their release date for the film, which will be summer of 2006. So, we gotta start shooting quite soon, because films like 'X-Men' are as complicated in their post-production as they are during production."
He added that "a script is almost finished and I expect to have it in my hands any day now. I've been given an idea of the storyline".
Also this re filming in BC:
http://www.superherohype.com/news/x-mennews.php?id=2585 The Vancouver Sun reports that X-Men 3 will likely shoot in British Columbia again:
British Columbia is front-runner once again to land the big-budget feature X-Men 3, thanks largely to increased tax incentives announced by the provincial government last month.
"B.C. has always been a great place to make movies and the increased tax incentive program has moved British Columbia to the top of my list as a destination of choice for X-Men 3," said producer Ross Fanger in a statement released Friday afternoon.
X2: X-Men United, second in the X-Men film franchise, was shot in B.C. with Fanger as unit production manager. Fanger also co-produced Fantastic Four, the biggest production to come to the province in 2004, an off-year for the industry.