CVG just recently put up part two of their interview with Jeff Kaplan, Lead Designer for Blizzard Entertainment.
"Plus we're giving all new players into the expansion interaction with Arthas," picks up Kaplan. "We were too protective of Illidan in The Burning Crusade, so you're interacting with Arthas straight away.You're talking to him, having these moments with him - you don't have to be a raider just to see him".
Read more of the interview here.
http://www.computerandvideogames.com/ar ... ?id=181521