I think many of us are waiting for the June/July Easyjet flights. Last year they were announced on 9th October (I think).
I have checked Ryanair prices and although their prices are cheaper, I wouldn't want to book, as the return flight is at 10.30pm. I also did a check on Jet2 from East Midlands and for 2015 the price would be double the amount we paid for this years flights with Easyjet.
I will just be glad when we have booked the flights as we have already booked accommodation at the Horizon.