Blizzard admits Diablo III does have enough for "long-term sustainability"
 

People waited over a decade for Diablo III, and that wait has amounted to a game that doesn’t have enough content for people to enjoy in the long run. Blizzard admits Diablo III does have “enough for a long-term sustainability end-game.”

http://vr-zone.com/articles/blizzard...ty-/16557.html