"I wrote the story for 'First Class' and produced it so this is a chance to not do a sequel to 'First Class' or a sequel to 'X-Men 3'
but to do both
I guess in a way," Singer told us. "In 'Days of Future Past' the story structure is a fantastic way to do that."
Future DoFP scenes takes place after X-Men 3, not after X2 or X1 as some people speculated.