I was mostly hoping for some fun and sexy times with Luna, but judging from the image she won't play an important part in this update. I hope I'm wrong.
If I remember correctly, this picture is teasing something like a party that was already hinted at at the end of the last update. I think we’ll be spending some time at least with the past version of Tiffany, among other things. It’s probably just one part of what the next update has in store.
That said, there’s a good chance we’ll see Luna either in this update or the one after. The story seemed to be building something with her, especially the mystery around her connection to the MC and whatever she might’ve told her daughter, Skylar, about him.
By the way, Skylar is definitely saving some surprises for us in the future, though it’s still a mystery what they’ll be.