Who are the Dark X-Men?

Marvel.com has posted a teaser image without really any other details on what exactly they've posted. It appears to be a new team of X-Men featuring Namor, Emma Frost, Wolverine, a returning Professor X, Cloak & Dagger, maybe Angel (or his brother?) and another character I'm not real sure about.

Marvel Unveils Alex Ross-Designed Marvels Anniversary Variant Covers

More in Comics