Where are the iPhone Push Notifications?

And I’m not talking about MobileMe. Dan moren says:

We put in a call to Apple to find out the reason why, but unless you’re new to this whole scene you won’t exactly be flabbergasted to hear that the company was about as communicative as your average sullen teenager. The company’s approach appears to be pretending that the system was never announced in the first place—you won’t find any notice of it on Apple’s site, save for the plaintive cries of users wondering what happened to it. [Dan Moren of Macworld]

It’s a very interesting point. What happened to the iPhone push notifications? My only guess is as good as the next guys.