I just checked the calendar and Happily Ever After is scheduled all weekend. There are no separate fireworks, just the ones that are part of that show.
Looking at disneyworld.disney.com.go, clicked on MK. Clicked on today's date. Anyhow, good to know. We are staying at the Poly, no theme park tickets this trip, and were hoping to watch the show from the beach. Now we can- with a Dole whip!
I find I am better to check the app rather than the website as the app normally provides more accurate information about current entertainment, hours, etc.
Also, if true, there is a storm headed to pass through parts of Florida this weekend. Not a hurricane but strong winds which might affect the fireworks.
Weather's not bad at all, and evening "shows" are scheduled for Fantasmic, Epcot, and Disney Springs. I checked with the front desk at the Poly and their schedule shows the fireworks are at 9:20
I still think that they are planning to have them as usual. There is no way of knowing if the storm is going to pick up in intensity so they are not going to promote something that might not happen due to the path of the impending storm.