Maybe they'll do something similar to Casino Royale where the Bond theme isn't used until the very end of the film.
I loved this aspect of Casino Royale.
All through the movie we hear little pieces of the intro music interwtined within the score, but we dont hear the proper Bond music until he is the Bond we all know and love.
I like what Gastrof said, where at then end they are all on the bridge grouped around the throne and we hear the voice over and the fanfare because before this happens, its not Star Trek. And then courages music kicks in and we have the credits.
Although, if Pike and crew are seen forst, i guess we can see the theme being used as it it was essentially Pikes Trek that started with the music, but that i guess is just fanwankery.
Id prefer it that way to the traditional opening with the music and titles.
What i would like, and this is pipe dream of course, is the opening scene be silent, only here foley effects and dialogue as the names afre flashing up on the screeen, much like the opening credits of Serenity.
Then when we finally see our guys all together on the bridge is where the original them kicks in.
And no, TMP theme wont be used in any way, it was Goldsmiths score that Gene liked for TNG so it was used, thats why its only heard in TNG, TMP, TFF, First Contact, Insurection and Nemeshit because Goldsmith scored those movies and that was His Trek Theme, same as if Horner scored ST:6, it wouldve had Horners Trek Theme and vise versa.