The new boarding process has yet to be confirmed. I don't think Priority Boarding will go away. easyJet still have Speedy Boarding and assigned seating. The easyJet Speedy Boarding product is actually quite good. For £10 you get priority check-in (great on Ski flights, or early morning flights where there is a lot of checked-in luggage), priority boarding and an exit seat. The Ryanair version is similarly priced.