Doors to the show floor open in about 2 hours 30 minutes time so we can start to expect a lot of insights and gossip from the floor soon.

Some of the major sites have streams running (or about to start):

E3 Live 2013 | Game Trailers Coverage E3 2013

E3 2013 - Video Games - Electronic Entertainment Expo - IGN

E3 2013 - GameSpot.com