User blog comment:LoveWaffle/"Days of Future Past" Will Take Us to Another Timeline/@comment-5473242-20121202013419/@comment-5116372-20121202081511

Shaw in X2 could be Shinobi SHaw who is Sabastian Shaw's son, since the Shaw only got referred to either Dr or Mr Shaw and the first name didn't get revealed.

Professor X walking in X-MEN Origins Wolverine and the start of X3 could be an illusion Professor X cast using his mind to make him appear less helpless and he does have the strongest mind in the world beside the Phoenix so it isn't that impossible to do.

Emma Frost in X-MEN First Class could be the mother of the Emma Frost and Silver Fox in Wolverine Origins.