Apple previously invited developers to help test the upcoming iPhone 3.0 Push Notification service using AP (Associated Press). Now they're ready for some IM action, and have prepared a special, 7-day build of AIM (AOL Instant Messenger) to put push through its paces:

As a developer actively working with iPhone OS, we would like your help in a private test of the Apple Push Notification service. For this test, we have selected AOL's AIM Developer Preview for iPhone OS 3.0 to create a high-volume test environment for our server.

Of course, as with most everything iPhone 3.0-related, at least news of the test didn't stay private for long.

For a sampling of some of the screenshots we've received, check out the gallery after the break!

[Thanks to Rikimaru, and all the anonymous tipsters!)

[gallery link="file" columns="2"]