Someone on Twitter reported that there would be some more testing in October, so I went around and did some research and have confirmed that the following resorts will be participating MyMagic+ testing through "mid-October". One person I talked to discussed it as the "initial rollout" and it seems that it will likely be extended. Here are the resorts: AKL (villas included), Contemporary (limited BLT reservations as well), Pop Century, POR, AoA, YC, BC (haven't heard anything on the villas yet), and Polynesian. At some point in this test, the "initial rollout" will begin from what I gather.