Apple has just let developers know that they can start testing the upcoming Push Notification Service starting today!

Start testing your applications using the Apple Push Notification service today. Log in to the iPhone Dev Center and review the Apple Push Notification Programming Guide and Getting Started video. Team Agents can log in to the iPhone Developer Program Portal and proceed to the App ID section to create the components necessary to enable and test applications using the Apple Push Notification service.

So, what Apps do we want to see getting pushy? Twitter clients? Instant messengers? Fart Apps? Let us -- and your favorite developers! -- know.