Okay, so the show itself doesn't start until July 15th in lovely Los Angeles, but the information machine revs full throttle far ahead of time and keeps the content flowing. Many developers and publishers like to show off their wares even before E3 hits, which lends a lot of pre-event madness to the schedule but also lets us cover a lot of the basics beforehand. That's great because it gives us more time during the actual show to concentrate on new announcements, games, media, video, and more time to ferret out those less-publicized gems that could otherwise get lost in the shuffle.
http://e3.gamespot.com
You can check out the above link for our splendiferous event page that pulls everything E3 under one tabbed roof, so you can catch up on our pre-show coverage as well as all the stories that'll be popping up as showtime gets closer. Whether you're intent on watching for news on specific games, or keeping tabs on all the new screenshots and video, or riding shotgun with our editorial team on the E3 blog, you'll be able to keep up with it all. That's not even taking into account our live broadcasts all throughout E3--be sure to stay tuned for our show schedule.
Discussion tends to heat up in the weeks leading up to the event, and while you can certainly reference news in our standard boards, our E3 site has a forum dedicated to the E3-mania. The concentrated goodness may be found here:
http://e3.gamespot.com/forum.html
Let's all enjoy the show!