With Goseiger almost over and the cast of next year's Super Sentai 35th Anniversary revealed, more rumors regarding the staff and the possible theme songs of the series has just surfaced online!
The series producer is rumored to be Takaaki Utsunomiya, who is responsible in producing the following Super Sentai shows: Ninpu Sentai Hurricanger, Mahou Sentai Magiranger, Go Go Sentai Boukenger, Jyuken Sentai Gekiranger, Samurai Sentai Shinkenger. He also produced these Kamen Rider shows: Kamen Rider 555, Kamen Rider Blade, Kamen Rider Kiva, and Shinkenger's World in Kamen Rider Decade.
The scripts are said to be done by Ryunosuke Kingetsu, who mostly write for anime and drama CDs for the Tales of franchise. His works in anime includes: Tales of Phantasia: The Animation, Tales of Symphonia: The Animation and Shugo Chara! and Hyakka Ryōran Samurai Girls. You can check more of his works here.
The opening theme is rumored to be called Kaizoku Sentai Goukaiger which will be sung by Yukio Yamagata, the one who sang the opening theme song of the 25th Super Sentai Anniversary series, Hyakujuu Sentai Gaoranger!
The ending theme is rumored to be called GO! Kai! which will be sung by Kouji Wada who did most of the theme songs for the Digimon franchise. If you are familiar with Digimon, I guess this song might be quite familiar.
Take these rumors as a grain of salt. Let's wait for official confirmation coming from Toei or any official source such as magazine scans and the like.
Special thanks to nerefir for the translations!