I think they are still using it and still calling it a pilot program, but they've taken a couple of the benefits out of the offering. For example, it no longer includes special access to viewing areas for fireworks and shows - unless it's via a fast pass offering (like Fantasmic or Rivers Of Light).
I guess time will tell if they decide to expand and roll it out to other guests to buy. Or they could go the other way and just cancel it - but if guests are buying and they're making money, that doesn't seem likely. In some ways, folks have already been paying for FP for many years now - by paying the price of staying onsite at a Disney resort, you get the 60-day option. This bumps that up a notch.