nothing will happen at the halving, at this point i'm expecting something major later this year or even early 2017
Beside the block halving and perhaps a very short lasting price increase due to the block size being increased, nothing interesting will happen the rest of this year and next year.
The most people are hoping that the halving will be good and that is because there are still a lot of people that is using Bitcoin so that wont be that nice.
But you also have to know that there will be more people that is going to use it.