Nope. The outro for Disneyland Forever is the Kiss Goodnight song written by Richard Sherman. No additional projections on the castle.
In defense of the projection mapping shows, I think it really enhanced the fireworks experience at Disneyland, especially since it spreads the crowds out all over the park. By projecting on the Matterhorn, Main Street, Castle, IaSW and RoA, they finally found a way to avoid the hub being uncomfortably crowded.
I also think Disney Dreams at DLP works quite well. If they'd manage to integrate projection mapping and fireworks to Main Street/Castle at MK in a way that doesn't feel like a Disney Channel commercial, I think they could make a great show relying on the nostalgia of your favorite Disney movies.