They are apparently trying to get the Frozen ride open by this Christmas season 2015, whether that will happen or not we'll have to wait and see, and I'm assuming they Meet and Greet would open round the same time but there is no official date as of yet, and no word on what the M&G will be like. The original Norway M&G had a Frozen backdrop and
Disneyland's M&G had an animatronic Olaf at the entrance, but the building itself is really pretty big and will maybe include some type of little show like Enchanted Tales with Belle