[msftguy]

It's handled when your push service trims out dead tokens, which it needs to do periodically anyway.

[epoxyhockey]

Thanks for that info, I somehow overlooked this when rolling my own push provider.

For those still interested: There is a separate feedback service (feedback.push.apple.com) that providers should query periodically. It returns a list of device tokens that are no longer valid for your application.

Reference: http://developer.apple.com/library/ios/#documentation/Networ...