When do you expect EasyJet to show their hand?
Shed, maybe LAX or Viscount 702 could provide a fuller picture but the current Easyjet schedules for dates in mid-July 2016 show gaps in the first wave of departures.
11 based a/c seem to be required on Tuesday, Thursday and Saturday,
10 on Monday and Friday, 9 on Wednesday and I could only see 8 on Sunday. Unless a/c are being moved between bases, it does leave 7 slots for an 11 based fleet and that is without checking the second or third waves or flights with non-based a/c.
Of course, I can't guarantee these figures are correct despite rechecking, and it's possible schedules may still be juggled around I suppose.