I just finished reviewing a document for using the WPF Performance Profiling Tools and I have to say it looks like a lot of fun. I'm ready to start hooking up all my sample apps just to see what happens.
I know perf is an issue everyone cares about and if you haven't seen the performance tools before, you should check them out. The tools help you figure out where you are spending the most CPU/GPU and include lots of cool visualizations so you can see the problems in your running application. And if you want to know more about improving the performance of your WPF application, don't forget to check the section in our docs about Optimizing WPF Application Performance. This section includes topics on performance issues for layout, graphics, data binding, controls, text and more. In addition, you can check Jossef's blog for regular perf tips. And as always, if you can't find the information you need to write your application, drop us a line.