Older Beast cameo in Days of Future Past ! Spoilers!!!

We all know that Nicholas Hoult would portray young Beast in X-men Days of Future Past. It turns out that Kelsey Grammer, who played Beast in X-men Last Stand, will return as older Beast in a cameo in X-men Days of Future Past. In the new website called  25 Moments.com, it said that in 2015, a couple of years later after the events of X-men Last Stand, Beast was killed by an angry mob of human mutant haters. But in the Days of Future Past movie when Wolverine changes the past, that might mean that in the new changed future, Beast would still be alive with the rest of the X-men and that would be Kelsey Grammer's cameo appearance. Guess we would see what happens in X-men Days of Future Past movie when it comes out on May 23, 2014.