Deadwood actor also reveals he will only appear in the show for one episode in the sixth series.
The movie will also star Crimson Peak's Jessica Chastain and American Horror Story: Hotel's Kathy Bates.
The paranormal activity movie has been written by, and will be directed by Russell Friedenberg.
"I am okay with it [going nude] if it's required for my character," says the actor.
Game Of Thrones season 6 might not air in April 2016.
Event comes just days after release of latest The Force Awakens trailer and Back to the Future day.
'We needed to really reinforce our position as the home of science fiction and fantasy,' Howe tells IBTimes UK.
Discussing the potential for episodic games following the final episodes of the two of the year's best.
Could this be Selene's last outing? Studio hint Divergent's James will take over as the fanged lead.
BBC's The Last Kingdom is not like Game Of Thrones, says the author.
Actress best known for playing Daenerys Targaryen in HBO series tops Esquire poll
The rights to the Game Of Thrones author's 1980s short story have been bought by HBO's sister company, Cinemax.
Game of Thrones ending will be 'bittersweet', according to author George RR Martin.
The Stalker star has recently been on the set of the show during filming.
Will fans get to see Maisie Williams kick some Kaiju butt?
HBO says preliminary discussions about Watchmen have already taken place.
'There will be a movie but I will not be involved,' says the author.
Will Jon Snow reclaim Winterfell in season 6?
These famous names have gained quite a following on the video messaging app, which has had an update.
Williams talks about the upcoming season 6 of GoT.
Jon Hamm won the award for outstanding lead actor in a drama series category.
IBTimes UK predicts who will win big at the 2015 Emmy Awards in Los Angeles.