Looks as if Lucas Till will be back reprising as Havok for X-Men: Days of Future Past.
For once this doesn't come from Bryan Singer's twitter, but a fan posted the following image of himself with Lucas Till.
It's stated it's on the set of the new X-Men movie.
So it looks as if we can add another mutie to the cast, and more than likely, there is more to come.
That's one Summers brother down - and one to go...
X-Men: Days of Future Past has a July 14, 2014 release date starring Jennifer Lawrence, James McAvoy, Michael Fassbender, Nicholas Hoult, Anna Paquin, Ellen Page, ShawnAshmore, with Hugh Jackman reprising as Wolverine, and returning cast members Patrick Stewart and Ian McKellan.