The single biggest take-away I had from the PDC came from the first keynote. It was the reality that Microsoft will be releasing Windows Vista and Office 12 at the same time next year. This will certainly be good for Microsoft's bottom line. The graphic requirements will mean a lot of people will be upgrading their hardware, which will be good for that whole sub-industry. And finally a lot of upgrades will be sold of applications that will have vista versions available so it will be good for the ISV world.
Dare had a pretty similar take, albeit focused on more than just vista and office within Msft. Call me optimistic, but I think this bodes well for the entire industry.