Fred Topel, from About.com talked with Famke Janssen (Jean Grey) about her thoughts on X1/X2 director, Bryan Singer leaving the franchise. Also, on if she'll return for X3:
Will she come back for X3? "I might. It depends. It depends on many different things, who the director would be. Bryan Singer is no longer going to direct it. He did the first two and then he ended up doing Superman now. I love the first two X-Mens because I thought that Bryan Singer did such a great job. He elevated that whole genre. He’s a very talented director."
What about the set-up for the Dark Phoenix plot line? "Bryan really wanted to follow that storyline because it’s one of the biggest storylines in the X-Men comic books. So it would have been great for me if that had happened and that scenario. I’m not sure what they’re going to do. I know Dark Phoenix is a huge part of the X-Men saga, so I’m assuming they’re at least going to want to touch on it, but I don't know and I don't know whether I would want to be involved. That depends on many different things."