Well anyone who knows Blizz any bit, can say that Blizz takes their sweet time on making the games, that is nothing new.
I have some contacts to Samwise Didier and Chris Metzen but they can't tell me anything, obviously.
But on Diablo related news - month old mind you - Keith Parkinson died last month. He was a major player in the fantasy art circles and even did a piece about Diablo with Chris Metzen.