I don’t recall Konami streaming their past conferences, but I could be wrong. Either way, this year you can check out Konami’s E3 briefing. On June 16th at 1:00pm PST, you can check out Konami’s live stream of their conference at their E3 hub.
The only catch is you have to register at their site, and be over the age of 18. They are also holding some contests for residents of the US and Canada, so you might get something lovely while you are over there.