I dont know if anyone has been following this but there's been a teaser website up for a while now for a new project by Kojima. Its been getting updated every now and again and the latest update has me really excited about a certain possibility.
The website is
http://www.konami.jp/kojima_pro/next/index.html
You'll notice in the new update its now raining asnd lighning strikes leading people to believe its something to do with Raiden. Add that to the fact if you watch it long enough the following letters flash up 1 by 1 and they are "5 @ E 3" So could it be, can it really be MGS 5 ? Only time will tell but for me the excitment has started to kick in

I leave you all to make up your own minds
P.S. Japanese Magazine
Famitsu PSP+PS3 will feature news on a brand new MGS game next week. Still this could be another PSP outing but am still holding onto the hope its MGS5. Hopefully on PS3 and/or Xbox360 but that sounds unlikely when its getting revealed in a PS3+PSP mag. Still I've posted this in Gaming discussion rather than Sony games because we dont know yet.