It's been confirmed people! I suppose this topic is very belated, but none exists so far. After 8 years of wait, we finally have confirmation to a sequel to the story of Sanctuary. You can check out the majority of the information at:
http://www.blizzard.com/diablo3/
Before asking questions, I suggest reading the F.A.Q page for all those interested. It answers a lot details and postpones the information that will be due later. There are also many interviews not located on the main site that you can find at most Diablo fansites and/or YouTube. The producers go into substantial detail about the reason for graphics, the story, etc... They also answer many questions. Here is one of many links: http://www.youtube.com/watch?v=mGU4zXH-RhQ
So what do you guys think? There's been great debate about how the graphics appear to be more 'WoWy' and how the Barbarian is a returning character. I do also think the graphics are a little more cartoony than before, but I understand that this is Diablo updated to the next generation and for that matter in 3D. I personally am just happy that they're going to be releasing this.
Battle.Net will also be updated a lot and will remain free. Good thing for me. I will never play a game that requires you to pay.
I hope with all of the graphic improvements that the game still isn't too hard to get along. Some people can't sit there for hours on end. 
And I hope they don't make it too long like Morrowind or some bull like that.