I dont think they have changed the game at all, I was there last night and it was still 6 decks with ~2 cutoff on average. One thing that is unique to mohegan sun is that most games use ***6 decks in an 8 deck discard tray***, something that could go unnoticed.
mohegan and fw are both s17/das/ls
mohegan is 6 decks, foxwoods is 8 deck foxwoods cuts off about 1.25-2 decks by dealer