I saw the book yesterday, definitely not for the faint of heart. It's a massive work, it clearly contains the best informations regarding every 262 known.
Part 1 covers every WkNr known with a text varying from half a page to just a few lines depending on the informations known about it. A good job has been done towards mentionning the sources which is definitely needed with such a work.
part 2 cover the unknown wknr mentionned in losses or through pictures or other documents. The amount of text being proportional to what is known about them.
It's a great reference document, featuring few pictures (most well known) and a massive listing of details of the a/c. Clearly it's not a book you buy expecting to read it from the beginning to the end, but it's a most needed reference to anyone interested in either the type or the Luftwaffe losses or a/c listings.
Good job Dan
I suggest you prepare some addenda/errate page on your site as it would be i think a nice addition.