Hi Nand -- this is a 1.5 book.
Review is here:
http://magazine.joomla.org/issues/Is...ok-for-novices
Website for the book is here:
www.joomla24hourtrainer.com
Due to Joomla's release schedule, I doubt you'll see many books out on Joomla 1.6, which actually will not be supported past August. Joomla 1.7 is due out in July.
Here's a post where I explain the Joomla release process and support going forward:
http://blog.lynda.com/2011/02/23/joo...da-com-author/
Oddly, Joomla 1.5 will be supported LONGER than Joomla 1.6 or 1.7.
Thanks!
Jen