English version update!
According to the official site of Hachette Book Company (who is the parent company of Little, Brown), the 6th novel in the Haruhi Suzumiya novel series will be released on
November 7th, 2011! The title has been officially translated as
The Wavering of Haruhi Suzumiya.
ISBNs: 9780316038911 (Hardcover) 9780316038928 (Paperback)
Neither book has an official page currently, but you can view the information via their
Nagaru Tanigawa bibliography.