Originally Posted by MissionTrek08
I think the (plot) point in the new film is that the future changes that past for Kirk, and thus will amend canon with new information.
You can still interfere with the past and have the future come out the same way. Look at First Contact, granted Cochrane acknowledged that he had assistance from the future, but it didn't change the timeline.
I think the movie can have Spock travel to the past (if that's what happens) and not change the timeline as we know it.