An image of the cast for X-Men: First Class was put up on MSN and disappeared soon thereafter. Of course some saved it and the pic has been available on other sites have You can't stop the internet.
I didn't know what X-Men: First Class was going to be about when it was first announced. Was it a follow-up to X-Men Origins: Wolverine focusing on a team featuring a young Cyclops? Was it a "next generation" type of story with a new cast of mutants? Was it a trussed up version of the long in-development Magneto origin movie? It's sort of the latter. That's Michael Fassbender as Magneto on the far right. James McAvoy on the far left plays a not-yet-bald Charles Xavier.
Where this movie falls on the timeline is still hazy to me. I suspect some plot holes are in the cards. I can use my geek powers to explain some things away. Let's assume Hank McCoy has been blue and furry since he was a teen, wore a disguise in his public life such as when he did a TV interview during X2 but came out as a mutant before the events of X-Men: The Last Stand. And maybe there just happens to be two blonde mutants named Emma Frost, the one seen in X-Men Origins: Wolverine and this new one played by January Jones. I think that works. With great geek power comes sad justifications.
Update: 1/19: MSN has put the picture back up and added an interesting interview with Michael Fassbender. Some details shared are that the film is set in the 1960's and Fassbender will don a costume that is more typical of what Magento traditionally wears.