Fox wont be as stupid to get rid of Jackman, Berry and Paquin with a a possible X4 in the works.
with Marvel doing Avengers 2, and Avengers 3 next, Fox has ALL the ingredients to do something as epic as those.
If they dont do it, they would have wasted such a huge opportunity
the FC series can still work during next years, since the age issue would be a positive thing, but we about X4, its not the same case, and this feels the perfect moment to do it, after DOFP.
the hype around the returning actors is there, so lets hope Fox doesnt play the stupid card again.