All in the Nov and Dec classes got 767ER to JFK but the next classes should see a mix of aircraft but mostly NYC. There have been now hires sent to SLC I think but not many. With the hiring and the bids coming around once a quarter it won't take long to get to SLC if that's what you want. CVG is more senior than the other bases.
I'm sure the other guys here that are more senior to me will chime in with more details.