Well, no news yet, but there's a big Diablo-related announcement slated for BlizzCon... so maybe it could be another expansion, and end up bringing a "complete edition". We'll have to wait and see!
Well, we're speculating that there is. Not for sure yet.
Though there was an image that got posted to their site and quickly taken down of a necromancer and a female necromancer.
Strongly indicating a D3 expansion featuring them as the new class (or one of the new classes). We'll find out for sure in.... 15 hours.