I hope you have heard about this cool site called www.seewindowsvista.com talked about on the blogsphere and on the Internet. Tom Skerrit (probably dating myself, but I remember him from Top Gun) guides you through a number of ISV offerings working on Vista solutions TODAY.
Nice site – interesting interface. Great showcase of what people and companies are already doing / planning to do with the Vista platform. For some Canadian content – 90 Degree Software can be found in the “Turning Information into Action” section.
Check it out!