Rarely is anything new at E3. Most of what's going to be shown is leaked ahead of the show or expected, like the PS4 and XBox 720 announcements people are expecting. Are you suggesting they won't show the new PS4 because everyone is aware of it?
This isn't really going anywhere. If you fail to see the marketing potential of E3 then I am wasting my time.
Worst case scenario is the project gets cancelled. While that isn't going to happen here you can never, ever predict the worst case scenario.
Didn't people say that last year too?
That doesn't mean much. Betas can be tailored to what suits the test, IE they could start everyone out with BLM already unlocked if they wanted.