PDC software - back to CTP hell
Update - Joseph Cooney commented that LINQ does in fact run on VS2005 beta 2. I swear I saw some MSDN page that said otherwise, but now I'm not finding that page, so perhaps I was suffering from an information-overload-induced hallucination. ;)
Update 2 - Duh, found the page that says the VS2005 RC is required for the LINQ tech previews - the main LINQ project page!