I believe that many things will happen but there seem to be many possible routes:
1) Turkey stays in the same course. Nobody knows how far this can continue or what the end might be, but Turkey joining the EU before 2015 is unlikely.
2) Turkey pursues a "special relationship" with EU. Actually this might work best for them, as it is very unlikelly that EU will keep hard-pressing for reforms in this case.
3) Turkey turns its back to EU, through elections. This begs the question what happens next? A shift to a more sacred or a more secular state?
4) Another coup d'etat. General Ilker Basbug, chief of land forces,
stated on Sep 27 2006: "The Turkish Armed Forces [TSK] has always taken sides and will continue to take sides in protecting the nation-state, the unitary state and the secular state" and "I have to say with regret that the Islamic reactionary threat, even if some don’t want to see this, has reached alarming levels"