The information from diabloiiigold.com

[fairyann]

　　Diablo games is very interesting and I like it. I often play it and gain diablo 3 gold in diabloiiigold.com in my space time. There is much adventure in the games.
　　"Diablo 3" Chief Technical Art Julian Love pointed out that "Diablo 3" will support the "StarCraft 2" and does not support the Local Area Network (LAN) of the decision. Blizzard Battle.Net wants to build a new era for the new multiplayer game services, combined with a wealth of experience to bring the full multiplayer fun game for players of high quality,. So "Diablo 3" There are no plans to support LAN.