Blizzard has posted news about their planned attendance at the upcoming Penny Arcade Expo: East show. They will be there, Bashiok will be there, but they will not be showing Diablo 3.
If you’re at the show stop by the NVIDIA booth and say hi!
Presumably they didn’t want to drag out the now-outdated 2009 Blizzcon demo build again, and they’re not going to interrupt their development progress to produce a demo build now, just for this show. So no Diablo 3, which means we’ll likely have to wait for Blizzcon 2010 sometime in the Fall to see the game in action again. Bashiok does say that he’ll be at the show and will be happy to talk about Diablo 3, so all is not lost for any Diablo 3 fans planning to attend the convention.