Ntr Ann hasn't occurred just yet! I'm working on a mod for the game rn that'll come out eventually which is more heavily ntr focused than what's (currently) in the game. If you have any feedback for how strong it should be and/or what you want included in that mod just say so. So far some ideas given from others have been an extended library scene with Chris/Ann, him taking Ann's virginity, and Ann remaining in character for it all.
Lorenz1 is right though, it's a great update so far and the wait will be worth it