When will the editor be released, and what will its features be?

You didn't understand. There's an option in the settings called "dynamic combat." Thanks to this feature, each creature has a few seconds to attack.
And in general, they promised to make the battles dynamic, not the game.

))You didn't understand. It's the game!! So that it doesn't last 20 hours, but 5 hours. That's why they made the maps smaller. Hacker is right.
P.S. And in general, I suggest rolling back time by two months)))) and not releasing "Heroes 5"))). Why do we need it??))). And then there would be no need to bother with an add-on))).