From what he said, poise, or more accurately, recovery animations, have been nerfed, being easier to get combo'ed. Invicibility frames in general have been reduced, being more difficult to dodge. You can take damage and possibly get staggered during a backstab animation. Parries are more difficult to land and may knock down enemies, and ripostes apparently weren't in the demo. AI greatly improved, enemies charge and do running attacks while you heal, dodge more,change behavior depending on their and your health and how many other enemies are close, they can even even stagger then circle and backstab you. Combat also seemed too heavy, and he didn't feel dual-wielding was a huge improvement. 4 player multiplayer, as dks 1. Being able to warp between all discovered bonfires, apparently even at the start of the game, seems not to be just a demo feature and will be on the final product.
Interview coming soon.