Mizuki Nana's new single (currently untitled) will be released on January 14. 

Mizuki's 31st single will include 4 tracks including the opening theme for the tv anime 'DOG DAYS', which will begin its broadcast in January. In the anime, Mizuki lends her voice to the characters 'Nanami Takatsuki' and 'Ricotta Elmar'. More details on the single will be revealed later. In addition, the ending theme for the anime will be sung by Horie Yui who is voice of 'Millhiore Firianno Biscotti'. 

Mizuki will also release her live DVD/Blu-ray "NANA MIZUKI LIVE FLIGHT�FLIGHT+" on January 14. It will include the finale from her tour 'NANA MIZUKI LIVE FLIGHT 2014' at Yokohama Stadium and the tour's extra edition 'NANA MIZUKI LIVE FLIGHT 2014+' held in September in Singapore. The DVD will come with 6 discs, while the Blu-ray will come with 4. In addition to live footage, the discs will contain making footage and an audio commentary.

Source: natalie