It's been rumored that Bryan Singer's X-Men: Days of Future Past would be shot and released in 48 frames per second, but until today there's been no confirmation of it. AICN has confirmed with two sources that the movie is being shot and will be released in 48fps. This is part of an e-mail that was sent to them, confirming,
X:DoFP was shot in HFR and will be released in 48fps. The filmmakers played coy because of the negative reaction to the technology when the Hobbit film was released, but love the results and will be standing behind a theatrical release in high frame rate.
This will be the fourth film to be shot and released in the higher frame rate. The first three are Peter Jackson's Hobbit trilogy. This format is going to to take a lot of getting used to. It was distracting watching the first Hobbit movie in it, but I hope I'll start to get used to it because we're going to start seeing more and more movies released in the higher frame rate.
It will definitely be interesting to see how the whole Quicksilver thing will turn out since Singer is shooting it in 3600fps.