Chris Metzen's comments on the lore conflicts were published today. Here's an excerpt:
Right To be totally up-front with you guys, it's my bad, straight up. The obvious lore contradiction with Sargeras and his encounter with the eredar was clearly documented in the Warcraft III manual. I wrote those bits about four years ago, and to be totally honest, I simply forgot. Genius, right?And he details more stuff. Very cool read if you're in to this (I am a bit -- just not super-dedicated towards it). Nice to see that Metzen admits his mistakes and decides to take it like a man. Props to him for that. His rep meter for me just bumped from honored to revered.