Eragon 4th book release date?

Does anyone have any idea when the fourth book is supposed to come out?Eragon 4th book release date?
No information as to the release date is available.



Paolini stated on August 17th, 2010 that he was still in the process of writing, but there was starting to be "a light at the end of the tunnel."



In October 2010, Paolini stated:







I am finally--after more than a decade spent working on this series--getting to write a proper ending to the story.





So far, there has been a 2-3 three year gap between the publications of each of the Inheritance books. The name or an estimated release date for the fourth book has yet to be released.



The author, Paolini, has stated that he came up with about 100 pages of the fourth book while writing Brisingr, so this may possibly speed up the process to some degree.