Today I found a nice video, that shows the main features and ideas behind the next Battle.net by Blizzard.
Greg Canessa (Project Director of Battle.net) explains the parts of Blizzards new Battle.Net
To me, it looks like a mix of Steam and Xfire-Client 
Here it is:
[url=http://www.gametrailers.com/player/61756.html]Blizzard Entertainment – Battle.net Preview[/url]
After they introduced the Monk class for Diablo III, Blizzard surprises us now with a new class for Diablo III: The female Monk.
Hm … shouldnt it be a nun instead of female Monk? 
Read more about that class here: [url=http://us.blizzard.com/diablo3/characters/monk.xml]DiabloIII – Monk[/url]
[img]http://www.combatgamershq.com/wp/wp-content/uploads/Bikerpete/2010/02/nun.jpg[/img]
Whow … that looks promising:
[youtube]http://www.youtube.com/watch?v=-PvrgG4T0yU&feature=player_embedded[/youtube]
[youtube]http://www.youtube.com/watch?v=-oeJaDVrBag&feature=player_embedded[/youtube]
