They introduced official gamepad support coming to iOS7 at WWDC, both standalone gamepads and iphone/ipod-wrapping cases. A couple MFI partners even teased things to come. And then... nothing.
It became actually real in the release of iOS7. The iPhone event even dedicated some serious stage time to gaming and a few higher-profile apps were updated to support it. But, still, nothing.
The iPad event came and went and they didn't even mention the iPod Touch, let alone gaming. I don't think they've ever talked about the iPad without talking about gaming.
So I wonder if the event was "off" because a tent pole feature, something that encompassed phones, tablets, ipods and maybe even the appleTV, just wasn't ready to go.