... it doesn't look anything like XV.
It's basically the ATB system, but with free movement and camera, whilst letting you attack in place of just waiting for the ATB gauge to fill. Personally, I think it looks great: flashy for those who don't like more turn-based stuff, but is basically just the ATB at its core hiding behind the modern flourishes. Best of both worlds.
The whole system of having other party members fill up their ATB in the background, then switching to them to do attacks looks smooth. It's like a culmination of everything they've learned of real-time combat from XV and KH, whilst making an effort to keep it true to VII, whilst also including other stuff, like a stagger mechanic from XIII.
I think it looks fantastic, can't wait to play it.