So far James McAvoy, Jennifer Lawrence, Michael Fassbender, and Nicholas Hoult are the only actors from X-Men: First Class set for X-Men: Days of Future Past, and as we get closer to shooting next month it looks like they’ll be the only ones.
Caleb Landry Jones will NOT be back as Banshee in the next X-Men movie. Just spoke with the man and he confirmed for me.
If Matthew Vaughn had stuck it out as director things may have been different, but since Bryan Singer took over it appears his main focus has been to reunite the old X-Men gang (at least, those who weren’t killed off in X3). Banshee was a cool character and his sonic screams helped locate Kevin Bacon in his submarine, but I can see why he wouldn’t be included. Days of Future Past will partly take place in the 70s, 10 years after First Class, so some of Xavier’s X-Men could have departed and new ones could have joined (young Storm, Jean and Cyclops maybe?).
Halle Berry, Peter Dinklage, Hugh Jackman, Patrick Stewart, Ian McKellen, Omar Sy, Anna Paquin, Ellen Page, Shawn Ashmore, Daniel Cudmore, Fan Bingbing, and Boo Boo Stewart are all confirmed to star, and X-Men: Days Of Future Past will be released July 2014.