Blizzard launched a new website a day or two back, which means a new Diablo III site, of course. I haven't checked it out in full but fans may want to look for new content. More information.
diii.net confirms a new Blizzard site, but says the Diablo III material is unchanged. I haven't checked it out recently myself though( since before the monk was announced,) so some of it was new to me.
Here's the diii newsbit: New Look for Blizzard.com