Blizzard has let slip some of the improvements of Diablo 3 Ultimate Evil Edition on the PS4.
Your friends have a chance of receiving a "gift" every time you get a legendary drop
The gift is a legendary item of their own that they can open on whichever hero they want to: the stats roll upon opening the gift
You'll be able to send items to your friends
Nemesis System: The monster that kills you can level up, jump into a portal and appear later in a friend's game
If your friend kills it, you get "gifts", if the monster kills them, it keeps getting stronger and jumps to another game randomly chosen from your friend's friend list.
Apprentice mode: if a lower level player pairs up with a higher level player, the system boosts the lower level player's stats so that they can handle the action
You still get the exp and items on both characters (each one appropriate to their base level, slightly boosted for the lower level)
Bonus experience is given for group play
Loot is distributed to the players that have priority by stat
All loot drops for everybody, if someone picks a Dexterity item it goes to the DH, if it's a Strength item it goes to the Barbarian and so on
You get a speed boost for destroying breakables
Massacre bonuses give more experience
Killing enemies with environment gives more experience
Massacres have a chance of dropping a Nephalem Glory globe
Source:
Diablofans