Final is being removed?

Yes and flashback too i think (i guess opening is not allowed either anymore).

I don't think overarching is getting removed tho.

yes, if you go to the dante reyes page and then go to previous editions.

It was also removed on Miles Morales Prowler (from Across the spider verse) page before.

Too much antagonist fussing which is stupid. I think central and final should stay but I don't make the rules here. They are also omitting X-turned-Y now.

Overarching shouldn't be removed. It's too necessary and would be like removing main or secondary.

Here's a suggestion. Why not just remove antagonist roles entirely or only let admins change roles after they've been decided when the page was made?

Admins and mods are removing them because they’re— frankly— stupid and lead to too much edit warring, especially since there’s more to villains than just “what role they play in the plot”. With those terms removed, there will be much less fussing.

Is there an annoucement or blog post about all this?

They're gone because a lot of them were needless and cause nothing but antagonist fussing.

They're gone. They're not coming back. End of story.