X-Men: Days of Future Past
Young and old Professor X (James McAvoy and Patrick Stewart) in a poster for X-Men: Days of Future Past.20th Century Fox

In his third film as famously-bald X-Men leader Professor Charles Xavier, actor James McAvoy will finally be shaving his head.

In an interview with Huffington Post McAvoy revealed little about the secretive 2016 sequel to Days of Future Past, but did reveal he will be losing his locks.

"I'll be older in this one," McAvoy said, "[And] I think I'm losing my hair finally. And, yeah, that's kind of all I know."

Director Bryan Singer revealed earlier this year that the sequel would be set in the 1980s, continuing the trend set by X-Men: First Class (set in the 60s) and Days of Future Past (set in the 70s).

McAvoy doesn't know much else about the film, which is still a way off entering production, but thinks he might do soon.

"I got an email from the [producer/writer Simon Kinberg] who informed me he was getting dead excited about stuff, but he didn't want to divulge anything for a couple of weeks, so I really don't know," said the 35-year-old.

Earlier this year X-Men: Days of Future Past was released to huge acclaim and big box office success. The film stars the younger 70s-set cast starring McAvoy, Michael Fassbender and Jennifer Lawrence as well as the older cast lead by Hugh Jackman, Sir Patrick Stewart and Sir Ian McKellan, thanks to its time-travelling plot.

In one powerful scene McAvoy and Stewart come face to face as the young and old Professor X.

X-Men: Apocalypse, like DoFP before it, will be a very different kind of X-Men film, this time pitting the heroes against an ancient all-powerful mutant whose name Apocaylpse is also his mission statement.

Apocalypse will be released on 19 May 2016.