Sony's Yoshida: Team Ico Has Something "Really, Really Good on the Way"

[Seihyouken]

ICO - September 2001
Shadow of the Colossus - October 2005

If the 4 years cycle holds true then we can safely expect the 3rd ICO game to be released in Fall of 2009.

I can't wait till we get our first look at it at TGS.