Blizzard is hard at work on their first major update for their Reaper of Souls expansion for Diablo III, patch 2.1.0, and it's... well, it's something. In terms of content it's grossly thin, but in terms of systems to help add to the way people play it's rather robust. Blizzard will be adding Seasons, similar to Diablo II's ladders, which are finite periods of time for players to level and achieve certain accomplishments before a new Season begins. Also added will be Greater Rifts (with greater rewards) and Leaderboards.
First to expand on Seasons though. Seasons look like they'll become the way to play Diablo III when they patch finally kicks in. Seasons will feature unique Legendary items available only within them (though they'll be put into the full game after the Season ends), conquest challenges which give players specific goals to compete with other players over, and of course extensive Leaderboards cataloging the progress of several statistics. Plus, after a Season ends the character just becomes a normal one, so it's not like anyone's efforts go to waste.
Next up is Greater Rifts, which aren't a radical change to the current rifting system, but allows for more depth and challenge than the current rift and Torment difficulty system. Basically, players will complete a rift like normal, but upon completion have the option to spend a "Greater Rift Key" kicking off a race against the clock to delve as deep as possible into a network of rifts. Players get put into a rift, they have to kill an amount of creatures before time runs out, then kill the rift boss. Then they can go to the next Greater Rift level, and so on. Loot is reserved to drop only from each level's rift boss and death is more punishing than in a normal rift. Basically, risk and reward. Greater Rifts will be an optimal solution for players unhappy with the current repetitiveness of rifts.
Then of course there will be Leaderboards, which will cover a broad range of subjects but also serve as a supplementary feature for both Seasons and Greater Rifts. There will be Leaderboards for solo players, for group players, for Season players, for red players and blue players. Everyone loves leaderboards, I guess.
Additional changes like a huge change to Dexterity and the addition of a new rift level -- The Cesspools -- will also be included in patch 2.1.0, so feel free to check out the full official PTR patch summary for more information. The patch is currently on the Reaper of Souls public test realm, so we should be seeing and hearing more about a full release soon.
Diablo III: Reaper of Souls is currently available on PC alone, though it will be coming to consoles later this year. It's unclear whether the console ports will include these new features or not.