I was a fan of Star Trek but not an afficionado. Luckily, I went to the movie with one. He said they resolved having all the original crew on board Enterprise when Kirk took over by introducing time-travel and rewriting history. So, essentially, they could do honor to the old series but begin the saga again on different terms. He also said Paramont is committed to sequels!!
All I know is the movie was a total Blast and the way they ended with that shot of the crew on the bridge (totally mirroring the old series) brought the movie to a completely satisfying conclusion and left me with an insatiable urge to see more, More, MORE !!!