Director of the game, Jonathan Rogers (who isn't in this video), has outright cited Elden Ring as inspiration for the design of combat for Path of Exile 2, and this video reiterates that.
For devoted exiles, this promo doesn't reveal anything new, but it is happening in front of a larger audience. I'm looking forward to more class reveals.
This could have been Beta 1.8 and no one would have been able to tell.