I've also noticed that Banishing Smite is on the list - a 5th level Paladin spell normally unlocked at character level 17.
My personal guess is that each class will get some end-game feature, for people to make it more appealing, over multiclass ...
In
Last Community Update ... they are also talking about something called "Resonating Blast" ... wich as far as i know (and i may be wrong quite easily, i dont know monks too well) dont exist in DnD ... but its description:
"
infuses punched targets with Ki and can create a chain reaction of explosions across all in-range targets who have also been touched by Ki."
Sounds suspiciously simmilar to
Quivering Palm ...
Wich is also 17th level feature.