I dont see much difference in between "waiting for E3 to present there" and "waiting for E3 to start my own presentation" since its all just matter of different adress in browser for us.
Considering the state of E3 last year, and it being just web broadcast this year, why would ANY studio waste their time with it? They are better off marketing their own products. I am really curious to see what the actual participation numbers of this years E3 are going to be. Honestly, I think it is going to tank. Part of its draw was the "convention" setting, that is why developers paid so much to be a part of it. For the energy that drove word of mouth. I mean do you remember the old days when it was huge and stations like techTV had Olivia Munn broadcasting it? Now, at least for the last 2-3 years it has been just meh.