For my travel time (early August), Fantasmic FP+ is available. Just make sure you don't have other Tier 1 FP+ booked in your system. Otherwise it won't show up.
If you have another Tier 1 booked and can't get a F! FP+, don't worry.
They issue so many of them (thousands per day, nearly HALF of all seats in the theater) that you will likely be able to book a F! FP+ as your 4th or 5th FP+ of the day.
I have been able to book one as late as when I was walking to the F! theater to see that night's show.