Are the arena bonus units going to be the same after reset?

I dont think so, every rotation last for two weeks, so maybe the halloween units will take their place.

I’m not even sure. If they could actually drop the update so the dataminers could go to work that’d be GREAT

I think it will be the same. It's usually 2 weeks but 3 has happened before. The last few weeks they've told us the next bonus units in advance on the notification board and there hasn't been anything this time.
There aren't any new heroes to put on it yet apart from L!Tiki and the Halloween units won't be coming out until after the next arena week has started.

I really hope they rotate out. Having the entire board be filled with 5* exclusives is infuriating. I have to use Laevatein since I foddered my Fjorm. I'm just lucky I rolled her or I'd have been completely out of luck for 2 weeks. Let's please not make it 3 weeks