The King's Credentials are six Cubes with hidden power protected by the Zyumans. These items transformed into Zyuoh Changers and Yamato obtained one back when he was a child thanks to a mysterious bird Zyuman.
Junko Komura (Kaizoku Sentai Gokaiger, Kamen Rider Wizard) will write the series, Takayuki Shibazaki (Kamen Rider Ghost, Zyuden Sentai Kyoryuger) will direct the series, and finally, Takaki Utsunomiya (Samurai Sentai Shinkenger, Kamen Rider Wizard) will produce the series.
Doubutsu Sentai Zyuohger is set for a February 14, 2016 release.
[Source: Doubutsu Sentai Tumblr (link 2)]