I've just submitted my hopefully last revision of chapter on models for the Wicket in Action book. With the help of Cynthia Kane (our fabulous editor) who was willing to lend me quite some time trying to overcome a writers block, I got the hang of it even though it took me a couple of days to revise it.
I think it turned out really well. Now if Cynthia agrees, I suspect that the chapter will become available soon in the MEAP edition of the book. So please cross your fingers with me and hope for the best.
For now I start revising chapter 6, which is still based on Wicket 2.0.