A new item called Kanai's Cube (purported as the "REAL" Horadric Cube - the original creation that the Horadrim feared too much, so they hid it away and made the Horadric Cube in it's place) that you work with Zoltun to retrieve from the Ruins of Sescheron (I was super stoked to go back there), and from what I can glean, you can basically modify rare, set, and legendary gear, even so far as pulling abilities off of weapons, armor, and items, and applying them to something else you have. I need to do some more testing on that to be sure.
Rifts no longer require trials. I didn't get into the rifts just because I wanted to get the feel for playing again, so it was primarily Adventure Mode for me.
Bounties now yield much more loot and exp. I noticed each zone you bounty in has it's own crafting materials now too. In the zones that offer "bonus" bounties, they give more than the other zones, but I think you get 3 new materials of each corresponding material depending on the zone as a standard reward.
All in all, I was/am glad to be back. I was doing some further reading, and it sounds like there's a new zone (Greyhollow Island) along with Set Rifts and new legendary items. I didn't see anything pointing to that in-game, but they list all of these new features and also specify PC updates, so I'm assuming it applies to the console as well, although I could certainly be wrong. I was out of the game for much longer than I thought I would be, and I'm kinda kickin myself.
