Pro Wicket: First book being published for Wicket

Although wicket looks like a very promising framework, which is well on its way to be on of major player in web tire for JEE applications, lack of documantation has always been one of the major drawbacks for starters to dive into wicket. But recently, thanks to Apress and Karthik, ‘Pro Wicket’ beta book has been released. You can find the book here:

http://www.apress.com/book/bookDisplay.html?bID=10189

I just bought the book day before yesterday and enjoying this missing manual of wicket.