Earlier this week Kojima shared tweets showing a new game play demo featuring a better look at Mother Base and will be narrated by the Japanese voice actor for Ocelot(Satoshi Mikami).
Translation by Junker.HQ reads: “Good to see you again, Boss. TPP is almost upon us. You pre-ordered yet? Been doing image training?” Junker adds: “Script also says the video will reveal a lot of new elements”.
Kojima has since formally announced on his twitter account that the Mother Base gameplay video will be posted next week during gamescom with english commentary most likely by Sean Eyestone of now disbanded Kojima Productions. This will no doubt be something a lot of Metal gear fans will look forward too.
— 小島秀夫 (@Kojima_Hideo) July 31, 2015