In the trailer it clearly shows 4 new mutants: Bishop, Blink, Sunspot and Warpath. Most of whom have ties to the comic X-Force team. It is also confirmed that there will be an X-Force spinoff with 5 or so characters.
Now, I am pretty sure the end of DOFP will reconstruct the whole X-Men film franchise mythology, and we will probably end up with more comic accuracy which will quiet a lot of fanboys. However, could this be the team we might see in a future film?
As for the DOFP line up, I am suspecting that the X-Men consist of Magneto, Professor X, Kitty Pryde, Colossus , Iceman, Storm and Rogue and they will meet up with X-Force, which is lead by Wolverine and consists of Bishop, Sunspot, Warpath and Blink. Together they hold down the fort while Wolverine goes a time jumping. Either way, I am excited.