Numerous Internet sites have picked up and promulgated a story that originated on Ain’t It Cool News indicating that Bryan Singer shot X-Men: Days of Future Past at an enhanced rate of 48 frames per second, and that the film itself would be projected at that rate.  Now a spokesperson for Twentieth Century Fox has denied the rumors and indicated that the report that DOFP will be projected at a higher frame rate is false.
 
Peter Jackson did shoot his Hobbit Trilogy at the enhanced 48 fps rate.  Some theaters did end up showing The Hobbit: An Unexpected Journey at the enhanced rate, and more are expected to project the second Hobbit film, The Desolation of Smaug at the higher rate, which, according to Variety, requires the installation of new software on some digital projectors.  Some critics who saw the first Hobbit film at the enhanced rate complained that the process created distortions and gave the movie a cheesy hi-def home video look (see "48 FPS 'Hobbit' to Get Limited Release"), but Jackson has not wavered in his support of the technique, which he believes enhances sharpness of detail and makes a movie a more realistic, immersive experience (see "Peter Jackson Defends 'Hobbit' Footage").
 
While it appears that Bryan Singer’s X-Men: Days of Future Past was not shot, and will not be projected at 48 fps, the director did admit that he used ultra-high frame rates (up to 3600 frames per second) to provide the illusion of lightning-fast movements scenes featuring Quicksilver.