I think that easyJet maybe playing a safe game by waiting to see what jet2 and Ryanair are doing. I think the gaps will go nearer the time expect extra flights being added when they know what they can sell and what price.
Ryanair coming daily on the Palma will hurt easyJet.
Big question will be how easyJet react???? Add extra or keep the same amount of seats or adjust downwards and add when they need to.