From Playstation website

Today in the Community Theater, we’re live-streaming PlayStation Meeting 2013 straight from New York City to your PS3 via PlayStation Home, starting at 3pm Pacific / 6pm Eastern. *Note: The stream will start no earlier than the times listed above, so arrive promptly. If you arrive and no stream is running, simply reset the video stream by walking out into the Theater Lobby, then re-enter the Community Theater (theater 1). This is in Playstation Home on your PS3