from what little i've read about it, it seems that there is a small part on the top of the sump that will trap larger food particles that may have to be periodically cleaned, but that depends on use.
personally I'd like to see how the washing performance is, especially on the kitchenaids with the 3rd level rack spray tubes. I believe each spray arm level is on its own wash zone now, so only one will run at a time. the kitchenaid models also have a fan assisted dry again, a feature that I dont believe had been around for a while.