There are a slew of changes that are coming to Diablo 3. First and formost there are some upgrades to the way. First, greater rifts will receive a tweek that allows players to finish a rift in 2 to 4 floors with a better spread of monsters throughout the floors. Those who don't die will recieve and extra try at upgrading their legendary gems.
Some enemies that are underground or go airborne will now die if they are hit in air or underground. No more waiting for these enemies to be grounded or pop up from the earth to kill them.
Finally, the most important update is the celebration of Diablo's 20th anniversary. Gamers will now be able to play the original title (with some upgrades) through what Diablo developers are calling "RetroVision." Check out the overview trailer below for everything you need to know about the patch!
About the Diablo Universe:
Widely regarded as a benchmark for the action—role-playing game genre, Diablo (1996) introduced players to the dark, gothic world of Sanctuary and placed them at the center of what would be revealed to be a conflict between the angels of the High Heavens and demons of the Burning Hells over the fate of the world and its inhabitants. Diablo II (2000), along with its expansion, Lord of Destruction (2001), and several content patches that followed, took the series to new heights and depths, with an elaborate multi-act story, bold new character classes, and an intricate skill system. In Diablo III (2012), players return to the world of Sanctuary to again confront the Lord of Terror, supported this time by a vibrant cast of characters who join them in battle and aid them in other ways. With the upcoming release of Diablo III: Reaper of Souls, players will face a powerful new adversary, uncover his dark plan for humanity—and take the fight to him in a desperate bid to save Sanctuary once more.