I finally found this on the easyJet web site:
A NOTE REGARDING FUTURE SCHEDULES AND FARES
Generally speaking, new schedules are released one to two months before the end of the existing schedule. The exact date of the release of the new schedule is dependent on the confirmation of flight slots from the relevant air traffic control authorities. We are sorry we are unable to give you a more precise date.
Most other cheap airlines, such as Jet2 have had their Easter flights on sale for some time now, and already the prices are out of my reach.
Filbert - I think Jet2 will do really well out of Manchester. Personally I prefer flying from either Leeds/Bradford or Liverpool, they are nice and quiet and hassle free. Only thing is, you really don't want to have a serious delay at either of those places (specially Leeds/Bradford) as there is little to look at or do unlike in a busy place such as Manchester airport.
Having said that, I just love airports
Jo