Ken-ichiro Imaizumi, senior producer at Konami Computer Entertainment Japan, confirmed via Twitter that Kojima and himself will not attend the E3 this year, but other team members will be present. He tweeted to JP Kellams of Platinum Games:
When asked whether Kojima will be at the show, he said:
He’s talking about Sean Eyestone and Tan ‘Jackie’ Ziang, who also gave a live gameplay performance last year, behind closed doors. This suggests they may do another gameplay demo, but nothing has been confirmed so far.
Jackie and Sean rehearsing the E3 presentation, last year
Also: tomorrow, just after the Microsoft conference, the new MGSV trailer by Kojima will debut at Youtube’s live coverage show.
Ken explained he cannot answer any questions regarding Konami’s reorganization and the current status of (the disbanded) Kojima Productions. ‘I hope you understand’, he added.
Source: Ken-ichiro Imaizumi Twitter (1,2,3)