Patch 2.1.0 will also add "seasons" to the game. These are a new type of play that requires players to start a fresh character to level up. Why would someone want to do something so obviously crazy? Why, for the exclusive rewards and the chance to climb the leaderboards! There will also be season-only achievements called conquests that will be awarded to the first 1,000 players to get each one.
Once a season is over, the exclusive legendaries will be added to the rest of the game. Patch 2.1.0 will also impliment cesspool levels, combat balance changes, and greater rifts. The latter will have players racing against the clock to kill monsters and try to beat the end boss before time runs out.