Most Hilton properties use OnQ as their PMS system but there are some that use Opera. Opera is used by Marriott for all of their North American locations after decades of using Fosse and Opera I think is also used by IHG. In terms of digital key, it could be a new PMS system at the property or it could be Hilton's Digital Key System. More than likely it's not an update as OnQ now looks basically the same as it did 10+ years ago with a few minor modifications.