Still, things didn't get any more Rapid than they were in 1998 and that's a bit sad. In terms of productivity, C# with WPF/XAML is at best equally good IMO.

WPF/XAML can give you amazing results but I'm nowhere near as productive with it as I was with VB6.

I would venture that WinForms is actually more RAD'ish than WPF.

A lot of that productivity came from the drag-and-drop form editing. And what made it possible (and easy) was complete disregard for any kind of advanced dynamic layouts. Delphi's VCL, .NET's WinForms and the nameless VB6 UI toolkit are all designed around the notion of widgets manually placed on a 2D grid, and the most that you can get in terms of dynamic resizing is "anchoring" their corners to containers.

While true, WPF development when coupled with Blend design can be very expressive.

The main hurdle is getting how templates, styles, triggers and code interact together.

If one happens to work in enterprise projects, it is quite easy to get WPF component libraries.

I didn't call it that so I'm not sure what you're responding to.