Belle will have here own meet and greet in her little house/chateaus to the left, but I've also heard that she (Belle #2?) will be reading stories in the library in the castle...although I have no problem with it, Disney usually avoids having duplicate characters out at once (unless they are hidden, like 3 Mickey's in 3 separate meet and greet rooms where guests only can see one).
Ariel will also have her own meet and greet over in her grotto at her new attraction, as will Rapunzel over to the left of Small World in the area currently being renovated, and Princess Tiana will continue to meet and greet at the gazebo near Liberty Square.
ALL THE OTHER Princesses will be found at the Princess meet and greet that is going into Snow White's Scary Adventure attraction location, like Cinderalla and Sleeping Beauty (both whose meet and greet chateaus were scrapped for the Snow White/Dwarf's Mine Car ride).
I imagine that the old Beauty and the Beast theater, where Belle used to tell the B&tB stories using guests, and where Rapunzel (and previously Flynn) currently do meet and greets will continue to be used for other new meet and greets, like Brave.
I still hope, someday, that they resurrect Pixie Hollow, which would nicely fit into the 'forest' behind the new expanded Fantasyland...which could be built quietly (out of guest's sight), and would simply require either the rerouting of the existing road or (better yet) building 2 magical tunnels underneath the road where, though one, you are magically shrunk down to fairy size, returning back through the other where you are expanded back to your normal size (give or take an inch).
This would further expand the capacity of the Magic Kingdom and Fantasyland and support the continuing Tinkerbell and fairies stories being told on DVDs and books.
This would provide a perfectly themed area for the fairies, and Peter Pan and Wendy and even Captain Hook and Smee (who are also shrunk down to 'play' with us)
This would provide an amazing fairy-tail play area for the kids.
Fittingly at a magical place apart from Fantasyland
The original Pixie Hollow was out-of-place, inexplicably located between Dumbo's Circus and Ariel's Grotto, while this would be perfectly 'in-place'.
Perhaps, in the future, a rebuilt (with newer technology) Peter Pan ride could be built here (a 2-sided ride with twice the capacity)...where your little Pirate ship flies up extra high (over the hidden train tracks below, which passes through a tunnel as it approaches the Circus terminal) for it's wondrous view high over London, and a return back over the same as you return back 'home. Unrestricted by space, this attraction could be built out to be much longer and provide several more and more intricate scenes from the film, while taking off AND landing back in London (same scene, different route).
This new 'old' ride would not only upgrade the most popular ride in the park (going on 40 years now), it would provide double the capacity (further expanding the capacity of the park), draw people into the magical Pixie Hollow, allow for the old Peter Pan area to be re-purposed (Peter Pan made no sense there anyway)...and be just so...magical.