Shiny happy website:  http://msdn.microsoft.com/windowsvista/ 

Top 10 for developers: http://msdn.microsoft.com/windowsvista/default.aspx?pull=/library/en-us/dnlong/html/vistatopten.asp 

CHM version of the top 10 information (work in progress, developer oriented, includes excel spreadsheet with new API's) :  http://download.microsoft.com/download/8/e/2/8e261f30-fd82-4829-b116-a70fa078dcf8/Top10Wave.exe