IGN has half an hour worth non-commentated gameplay footage up on youtube.
So they basically cloned the snappiness of Hearthstone for Magic, down to the card attack animations and the "tactility" of it all. About time, I would say. I'm not sure whether I like the square cards in play or not, though.
And I guess the F2P mechanics will be much less kind to the player than it was back in Magic Duels. Not that Duels wasn't grindy as hell, but the fact that you couldn't get duplicates out of booster packs beyond the maximum of copies allowed in a deck for each rarity (Duels allowed only 1 of the same mythic in a deck, 2 rare, 3 uncommon... which meant that there was an effective limit of the booster packs you needed to get to unlock a full playset of a block), along with the possibility to grind F2P currency against the AI (abusing the AI in the process, of course) always struck me as too "nice" for the nasty F2P world. It didn't surprise me that they killed it off. I think many if not most players never saw the need to actually spend money on it, even if the game was so fair as to be an F2P with a spending cap (I think you could spend around 50 EUR when a set was released to get all cards; last I checked, that was the "Pre-Order"-Option of a Hearthstone expansion and I think it's clear that this won't get you anywhere near having all the cards of that expansion).
Of course, they might have burnt a lot of their players by pulling Duels without even finishing the block. Or they reckon those players will bite again, anyway. And they might try to lure Hearthstone players with this kind of snappy UI.
I'll have a look at it when it comes out, how bad the F2P impact is, how fair the pricing - and how stable the programming. I like the feel of how Hearthstone plays (in an UI sense, not gameplay), but I grew tired of the creature trading (I really don't like the gameplay resulting from being able to directly attacking an enemy creature), regular board wiping and generally passive play (no instants / activated abilities). I always found Magic to be my favorite (it was my first, after all) card game and I'd even be willing to spend a few (!) bucks if it plays well enough and I don't feel like it's a rip-off and using the usual F2P psychological warfare. I don't expect that to be the case, though. It's a F2P game releasing in 2018, after all. It's only to get worse with those.
Besides, I always can fall back to a heavily modded DotP 2014 with ~10.000 cards with hundreds of user-made decks that the AI *mostly* can pilot... somewhat.