Hideo Kojima was tightlipped when asked about his next project, but he did mention a little something that he and the rest of KojiPro have been working on: the FOX Engine.
Kojima says that while they used to develop specifically for one platform, the company is looking to broaden their global market by going multiplatform, thus crafting a new engine that can be utilized for development on PS3, Xbox 360 and PC became necessary.
The FOX Engine has been in development since MGS4's completion and in parallel with Metal Gear Solid: Peace Walker. Kojima wouldn't say much about his unannounced project, save for that it'll be multiplatform, Transfarrable and for a global audience. You can catch a glimpse at the engine in the interview below.