There was a website about this supposed Diablo 3, and it turned out to be a trojan site...
As far as storyline goes, you still do HAVE 2 Lesser Evils, and it may be possible for Andariel and Duriel to return, as their essenses were not destroyed...
Just conjecture though.
Edit: Maybe it'll become an Inu Yasha rip-off, as you have to gather all the missing shards of the Worldstone (Worldstone-no-tama?).
Threaded Mode