Currently, Muppet Vision 3D and Mama Melrose's are classified as being on the Streets of America. The other attractions in the area: Lights, Motors, Action! Extreme Stunt Show, Honey I Shrunk The Kids Playground, eateries Studio Catering Co. and High Octane Refreshments will close April 2nd to make way for the addition of the new Star Wars and Toy Story Lands.
The naming of this area would seem to indicate that a Muppet theme is coming to the currently closed Pizza Planet and possibly more Muppet mayhem to come!
Even the construction wall around "Pizza Planet" is pretty Muppety:
I'm looking forward to taking another trip to WDW too see the new Muppets Courtyard!