The thing left out of this patch note is probably information on what the easter event is and how you perform it in game.
I don't see companies being released this patch and instead the info being released then the content released 1.17a or 1.18. As far as what I've said before 1.17 is a foundation patch for massive changes. They can't change the combat system without implementing the Party Size Change. And they can't dump a Party Size change and combat system change/adjustment all at the same time. Because they have to observe players playing in a 8 man party to make sure the changes to combat will work with how players operate.