A new series of character posters of X-Men First Class has been released, we get to see Professor X (James McAvoy), Emma Frost (January Jones), Havok (Lucas Till), Beast (Nicholas Hoult), Angel (Zoe Kravitz), and Mystique (Jennifer Lawrence):

X-men First Class Film

(Click on a poster to enlarge it.)

I also spotted those two pictures on the Taiwanese fan page of X-men First Class:

(Click on a picture to enlarge it.)

So there are a few more character posters to come: we may expect character posters for Magneto, Azazel and Riptide.
:)