The online retailer Rakuten Books lists the 28th compiled book volume of Yoshihiro Togashi's Hunter X Hunter manga for July 4. Togashi has put his manga on hiatus in Shueisha's Weekly Shonen Jump magazine since last June. Other bookstores and Shueisha itself have not listed the 28th volume yet.
The last compiled book volume of the manga, #27, shipped in Japan in December of 2009. Viz Media published the 27th volume in North America in March.