Had a couple of matches just now. It's not bad, certainly better than I would have expected CODs gameplay transferring to a Battlefield system.
That said, it's still a bit shit. There's just constant notifications on UAV, spawns are an absolute joke - particularly on contested points, and there's a ton of 'lag' in terms of getting shot around corners - despite being connected to a good server (<25ms).
Visually it is also relatively poor compared to Battlefield. Again, it's better than I expected from COD, but you really start to notice it with explosions/debris - vehicles in particular.
I also had some guy ruin my killstreak on a point. Couldn't see him and died. I watched the kill cam and he was under the map - shooting up through the floor and killing everyone. He had a good view of everyone and plenty of ammo. Beta and all that - but interesting!