There has been a temporary meet-and-greet location for the princesses across from It's A Small World for the past few months. They closed their location in the Fantasyland Theater to turn the theater back into show capability ("Mickey and the Magical Map opens this summer")
The new Princess Fantasy Faire opens March 12 on the site of the Carnation Plaza Gardens, to the left of the castle as you reach the Hub at the end of Main Street. There will be a meet-and-greet as well as small shows and some snacks. And I'm sure merchandise.
PHXscuba