Celebrity river cruises

[peacefrogdog]

I know this is not RC but it's the same parent company.
Has anyone seen actual details regarding Celebrity's new river cruise boats and itineraries? All I see is the option to book priority access for a $500 deposit (!), but I don't see any details on the website to see what might actually be available. Seems like a stretch to put down a deposit without knowing what you're paying for, although it does sound to be refundable.