The WPF and Silverlight Designer team (a.k.a Cider team) launched a blog last week and they already have a TON of content!
Wow I need to catch up! I’m told during the months of January and February they will be adding a good bit of WPF & Silverlight content that will focus on the Designer toolset and walkthroughs using the Designer as well as some posts for control authors.
You can leave feedback for the Cider Team on the blog or you can send comments and questions using Twitter and include #wpfdesigner or #sldesigner in your tweets.
Enjoy! (I know I will)