Translated from Hideo Kojima’s Japanese twitter account:

“My next project will challenge a certain industry taboo.”

 “If I mess up, maybe I’ll have to leave the industry. But there’s no escaping it – I can’t pass otherwise.”

Personally I think the gaming industry currently has few taboos left to break. What controversial game could be brewing in the Metal Gear Solid creator’s head and will it end up being his last? 

Time will tell.