

"Diablo III’s Paragon progression system is also being majorly upgraded for the expansion, adding even more end-game character advancement and replayability. Two new game modes - Loot Runs and Nephalem Trials - are being added as well, providing fun and rewarding challenges for players to tackle when they’re not busy saving the world."
For people who played the game and stopped shortly after, a cinematic for story and game mode announcements aren't going to convince us to toss down another $60. Hopefully they will give more details about this expansion in the weeks to come, or, and much more likely, a huge unveiling at Blizzcon in 2.5 months.