You’ve played Diablo 3 pretty much non-stop since launch and have maxed out your character. Now what? Blizzard is working on a reason for you to keep playing, after admitting that the game’s end content is failing to keep players engaged. 
 
Blizzard has confirmed that it is working on new max-level content to give high level characters a reason to keep coming back and playing the game. Chief executive Mike Morhaime stated: “We are working on a gameplay system that will provide players who have max-level, high-powered characters new goals to strive for as an alternative to the ‘item hunt.’
 
We’re not ready to get into specifics just yet, but I can say that we’re actively taking your feedback into account as we plan out the future of the game.”
 
In addition to the new content, Morhaime mentioned the next patch as well. “On the game balance front, this update will contain changes designed to further deliver on the team’s goal of promoting ‘build diversity,’ with buffs to many rarely used, underpowered class abilities.
 
Another topic we’ve seen actively discussed is the fact that better, more distinct Legendary items are needed. We agree. Patch 1.0.4 will also include new and improved Legendary items that are more interesting, more powerful, and more epic in ways you probably won’t be expecting.”
 
source | battle.net