And the best way to avoid wishy-washy promises would be towait until you are ready and not worry about making a big splash at E3.
Remember E3 is not the be all and end all, heck if they wanted to they could ressurect Spaceworld and show it off there instead.
It would already be too late by then! Companies, and the public are going to give them their chance at E3. If they disapoint then, then they are already screwed. Lets pretend that E3 was today. Sony shows off the PS3 to the public and shows the game quality is similar to what weve seen in the movie Shrek 2. Fnas drop their jaws at games possibly as Final Fantasy Xlll, GTA,GT5, and more. Then XBox shows their console and gives the public promises that it can play both PC and XBox games, fully upgradable, and people wet their pants at Halo 3 and DOA4, and may I say it, A Square-Enix game. Then we go to Nintendo, they show us a list of games, some tech-specs, and tell us to "wait and see." Gamers by then would have already made up their mind. Im not saying everyone would, but enough to start trasing Nintendo all over again, and get their hopes up for the other consoles. This would also happen with developers:theyd go to Sony and my post is a train wreck.