So am I! I did some research on the Mom's Panel and asked earlier on here, and even though Disney recommends you book out as far as the 180-day mark, they don't always release them that way. Apparently, they get released in blocks of times, sometimes several months at a time, sometimes a month at a time. I think this has something to do with confirming the times of the fireworks. Even though Happily Ever After is around 9:00 in August, they can keep changing the time as much as they want until it gets closer. I have an email notification setup for a thread (which I'll link below), and hopefully I'll be notified when it gets released!
https://www.disboards.com/threads/t...ing-info-now-watching-for-5-28-dates.3604693/