An announcement concerning the The Disappearance of Nagato Yuki-Chan anime will be made on September 4 in the October issue of Young Ace. Earlier this year The Disappearance of Nagato Yuki-chan anime was announced and that it is currently in production.
The Disappearance of Nagato Yuki-chan is a spin-off manga in The Melancholy of Haruhi Suzumiya franchise, where it stars the eponymous character Yuki Nagato. The series takes place in the alternate universe established in The Disappearance of Haruhi Suzumiya. The series is written and drawn by Puyo, which started in February 2010. To date, the series has a total of 5 volumes with the 6th volume releasing on December 26th this year.
There is very little information regarding the anime announcement of The Disappearance of Nagato Yuki-chan, including whether or no Kyoto Animation will produce it. Two other spin-off manga were also produced into anime: The Melancholy of Haruhi-chan Suzumiya and Nyoron Churuya-san.
The Disappearance of Nagato Yuki-chan synopsis from Haruhichan:
Yuki Nagato, the shy president of the literature club, has never been very sure of herself around other people. But around Kyon, the only boy in the tiny, three-person club, Yuki finds herself faltering even more than usual. For Kyon, and for her precious club, Yuki must find her confidence and let her true personality shine! Enjoy taking a fresh look at your favorite characters in this brand-new story set in the world of The Disappearance of Haruhi Suzumiya!