You can now find the Silverlight 2 RTM version of this pageturn control, still here on codeplex : http://www.codeplex.com/wpfbookcontrol

I have also updated the online example showing flickr pictures in a book: http://blogs.msdn.com/mitsu/archive/2008/05/14/create-a-virtual-book-with-your-flickr-pictures.aspx
http://blogs.msdn.com/mitsu/archive/2008/05/14/show-your-flickr-pictures-in-a-silverlight-book.aspx

http://streaming.live.com now supports SL2 packages hosting.

Enjoy !