What's really surprising to me with the release of iOS 6, is that just about every one of the "New features" they've been lauding are already available via jailbreak on iOS5.
Free turn by turn navigation.
Expanded Siri capabilities to translate, change settings, load apps, etc.
Facebook integration.
Passbook.
Facetime over cellular.
Do Not Disturb and other response options.
Improved Mail.
Panoramic photos.
All of that is a direct result of prior jailbreak only functionality. I'm doing all of that, with a few limited exceptions, right now with jailbroken iOS5.
Apple would never admit it, but the jailbreak community provides as much innovation for their product as do their own engineers.
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