@wastingtimewithforums: Funny. Except that the "archived page" for Windows 7 is exactly the same, without any trace of WPF. Maybe it's because it's considered part of .NET?
Let's try navigating to the .NET homepage and see if we can find WPF from there. Look, there's even a section named "What's new in WPF Version 4.5 RC". They must have killed it off and buried the corpse under a pile of new features. Makes sense.