From the post: "Today is a long awaited day for me. Caliburn is now in official Beta. There have been many bug fixes and a ton of new features since the Alpha release last October. We’ve also been dogfooding it on several projects, one of which is NHProf. I wanted to use this post as an opportunity to summarize Caliburn’s current feature set and introduce you to the Line-Of-Business sample provided with the framework, built with Caliburn and Silverlight."