"No PS4 announcement at 2012 E3" says Sony- Darb Vader (Game Correspondent)

        According to recent interviews, Sony does not plan to unveil the rumored "Playstation 4" at this year's E3 Conference.  This could prove to be a detrimental mistake for Sony, as Nintendo plans to unveil their Wii U.  It could also prove to be a good choice for the company, as they will have the chance to see the competition and improve on their system according to what they see at the conference.  Only time will tell.............

See a full article on this on Gamespot.