Production is expected to begin on X-Men: Apocalypse later this month in Montreal, under the direction of Bryan Singer. While several cast members are already in place, director Bryan Singer announced on his Twitter page today that Lucas Till is reprising his role as Havok from X-Men: First Class and X-Men: Days of Future Past. X-Men: Apocalypse is already confirmed to be set in the 1980s, and it will be the last installment in this new trilogy, after X-Men: First Class and X-Men: Days of Future Past.

Lucas Till joins a growing cast that also includes Oscar Isaac (Apocalypse), Alexandra Shipp (Storm), Sophie Turner (Jean Grey), Tye Sheridan (Cyclops), Rose Byrne (Moira McTaggert), Kodi Smit-McPhee (Nightcrawler}, Ben Hardy (Angel), Lana Condor (Jubilee) and Olivia Munn (Psylocke). X-Men: First Class and X-Men: Days of Future Past stars James McAvoy (Professor X), Michael Fassbender (Magneto), Jennifer Lawrence (Mystique), Nicholas Hoult (Beast) and Evan Peters (Quicksilver) are also expected to return for the sequel. There have also been rumors that Hugh Jackman's Wolverine, Halle Berry's old Storm and Channing Tatum's Gambit will make cameo appearances.

What's interesting is Havok, a.k.a. Alex Summers, is the younger brother of Scott Summers, a.k.a. Cyclops (Tye Sheridan). However, Lucas Till is 24 years old, while Tye Sheridan is 18. It's worth noting that X-Men: First Class is set in the 1960s, while X-Men: Days of Future Past is set in the 1970s. While it may pose some logistical issues, since nearly 30 years will have spanned in the movie's timeline, but only five years have passed in real time, these characters are, after all, mutants, and, as we've learned from Logan, they may not exactly age like everyone else. Still, how can Lucas Till play the "younger brother" to an actor who is six years younger than him? We'll have to wait until more information is released about the plot, but, until then, check out director Bryan Singer's posts on Instagram and Twitter below.