Even if the movie is in the same general continuity as
X-Men Origins: Wolverine, it's possible that that was still somehow a different Emma. (Kinda like how I kinda prefer to think of Liev Schreiber's Victor Creed and Tyler Mane's Saber Tooth as different characters in the movie universe. After all, neither is ever referred to with the other's name on screen.)
Pike has been spotted in the offices of X-Men: First Class director Matthew Vaughn's casting director
This could be good news for the fans. Or, it could just be great news for the casting director! Giggidy-giggidy!
I'm still kinda weirded out by James McAvoy as young Xavier. For years, I've been thinking he would be perfect as young Magneto. I still think that, particularly since I think he bears a very strong resemblance to Ian McKellen. Put me in the camp that wants to see Tom Hardy as young Xavier. (Although, I'm not sure Hardy would do it. I'm not sure anyone wants to follow in Patrick Stewart's footsteps quite that literally.

)
Still, if we see Xavier & Magneto's falling out in this movie with these young actors, it will make it kinda hard to reconcile with the Stewart & McKellen versions still being pals in the prologue of
X-Men: The Last Stand. Oh, what a tangled continuity web we weave! Still, I prefer this over a reboot. People reboot things too damn much nowadays. Plus, I don't really see them officially rebooting things until after they're absolutely positive that they can't convince Hugh Jackman to play Wolverine any more.
But then, this is already a franchise rife with recasting, like the non-Aaron Stanford version of Pyro and the non-Ellen Page version of Kitty in the original
X-Men. And the non-Kelsey Grammer version of Hank McCoy in
X2, who doesn't even seem to be a mutant at all. Then there was the little girl who could walk through walls in
X2. She may or may not have been named Kitty. She certainly wasn't played by either of the other Kitty actresses and she looked considerably younger than either of them.