The only thing with just Jill that was added was this - One of the old scenes received an animation which it was really missing.
straight from discord, from the big man himself.
Honestly, it pisses me off when he does this. I get it, he doesn't like spoilers so we have to bash our brains in order to find new scenes. But for stuff life this, where it's something not easily noticeable, he could write it in the damn changelog.
He did the same shit a few updates ago with Lauren (neighbor mom) where she was just animated when interacting with her. People were going mad trying to find any new scene with her.