There's http://www.amazon.com/gp/product/0321278542/ but it looks a bit dated. Specificaly, it talks about bits that are no longer in use (powerpc bootloader for example) on modern machines.
So, my question really is: is there any other book, as comprehensive and detailed as this one?
EDIT: There's a new book which seems to be relevant: Mac OS X Internals - To The Apple's Core.
No, but it's still a great book. The internal hasn't changed that much; once you get the broad idea by reading that book, you can directly go to http://opensource.apple.com/ and read the latest kernel source code without problems.