Just like people have said, they need to reveal the damn thing. Not only reveal, but show us exactly how it works and what is so beneficial about it.
Give a tech demo, show specs, show videos, and offer exciting information about new IP's or old IP's rehashed (Kid Icarus or something). If they show the controller, then they should show EVERYTHING else. Tell us what the REV online setup will look like and how it'll function. Show us the real REV system; what it looks like when it's powered up; what the main menu looks like and so on and so forth.