Predictions on Evelynn's new kit from Teaser

So I've been staring at the video for the past hour, trying to peace together what her new kit is like, and from what I can tell, and this is all I think I could peace together on her kit.

Passive - Still the same, goes invis, but it seems like she might get increased MS while invis now, as her animation does change to one that seems like it's going faster.

Q - This is probably still Hate Spike, as it's an iconic part of her kit, and they already showed a teaser of them keeping it.

W - Now this is where things change I believe. What I can see, is that she no longer removes slows from herself, but could potentially be a way to reduce Armor or Magic Resist, through a marking system that takes a couple of seconds to charge. It also seems like this applies a slow.

E - It seems to be a teleport. She places down a mark, goes off and does something needed, like gank, and teleport back after a moment if she needs to.

R - Now, this one does not seem to be like it's old form at all, visually at least. It seems like she jumps into the air, maybe untargetable like Xayah does, and let out a 180 sweeping slash in front of her.

This is everything that I could piece together from the new teaser trailer that was uploaded.

The teaser is on the LoL YouTube page. Comma and period are the buttons that let you go back one frame, and forwards one frame.