Great News. It makes sense, the Xavier and Magneto conflict was one of Singer's favorite elements from the beginning.
I wonder if this movie could be jumping back and forward between different points in time. Not just time travel alone. but as a way to show unseen events and flashbacks between the two eras.
I am curious about if Beast is seen in the future sequences. In that list of confirmed cast members Nicholas Hoult's character is the only one who did not appear in the films Singer directed. Maybe he is killed by than or perhaps Kelsey Grammer would play hank again. Regardless of other opinions of The Last Stand, Grammer was perfect casting. I could see Singer using him if the story requires an older Beast.