I am staying at the Contemporary in September and they told me they are part of the test phase. I just received in the mail the info on my magic bands today.
The only resorts I'm aware of that are testing the bands are Art of Animation, Beach Club, Polynesian, Port Orleans Riverside, Animal Kingdom Lodge Jambo House Villas, Pop Century, Contemporary, Animal Kingdom Lodge Jambo House, and Yacht Club.
I made FP+ selections on the website yesterday. We are staying at Grand Floridian in October. Does that mean we will be getting Magic Bands or was it a fluke? Thanks!