Ok, timetable on Stansted website shows flights up until 13 April 2014, but flight bookings can be made through the whole of summer 2014 on both Stansted and Pegasus websites.
And did you really just say that the place where you have first heard about this is the "Luton thread"
Means nothing, I'll ask again. Where did you hear about Pegasus moving from Stansted to Luton???