Some stuff people on Reddit Noticed:
-You can light/save at a bonfire at any time, even with summons.
-Phantoms are able to interact with the bonfire?
-It seems like summons can loot enemies. These items are separate than the host's
-White phantoms are unaffected by the host's estus.
-White phantoms can use lifestones and estus.
-Different weapon types: dagger, short sword, long sword, curved blade, cleaver?, baton?, rapier, axe, maul, spear?, club, whip, blowgun?, and a bow.
-Backstabs take time to initiate, the grab must come in contact with them in order to execute the maneuver. An enemy can escape if they, for say, jump out of range before you can grab them.
-Right at the beginning, you can see a merchant.
-At 0:12 seconds, you can see the Longsword strong attack is the running slash, not the stab.
-The Pyromancer set is returning. You can see the bloodstain ghost wearing it at 0:41 and 3:20.
-Gestures menu (at 2:24) show old and new gestures: Point Forward, Bow, Wave, Joy, Hurrah!, a shrug of some sorts, and the last one kinda looks like a "watch out, we got a badass here" thingy.
-Human Effigies restore your humanity, but do not recover any missing health.
-At 3:10 beards!
-New autosave indicator. A scroll being written on. Looks kinda annoying IMO.
-At 5:06, when the trees get in front of the camera, they become transparent, so you can still see what's happening.