Absolutely not,only book 1,2 and 3. Watch all avatar episodes here for free - http://avatardestinyportal.com/
There is no Book 4, as the series ends with Book 3, but a new series will come out in 2011.
NO!!!!!!!!!!!There is NOT going to be avatar book 4!!!!!!!!!!BUT theres going to be another movie
There is no book 4 of Avatar. It ends at Book 3: Fire. He doesn't die at all.
I've been looking around and until now all webs say there will be no season 4.
http://avatar-2u.blogspot.com/
There is no book 4 of Avatar the Last Airbender.
Avatar ends in book 3
no
there is no book 4 however, they are working on Avatar: Legend of Korra
There is no Book 4, as the series ends with Book 3, but a new series will come out in 2011.
no
yes
yes
never
there is no book 4
NO!!!!!!!!!!!There is NOT going to be avatar book 4!!!!!!!!!!BUT theres going to be another movie
To be honest their will not be a book 4 of avatar the last airbender though nick staff is maybe going to make a avatar based cartoon.