There's a charming fiction that goes something like this: Apple hates jailbreakers and does everything it can to stifle them. The truth is a bit more complicated. For Apple, the jailbreak community is a great sounding board and a farm team from which to recruit talent. Take iOS 5's new Notification Center. It looks a lot like developer Peter Hajas' jailbreak app MobileNotifier -- and no wonder, Hajas now works for Apple.
And Apple isn't above stealing a couple other tricks from jailbreak-land. Take the prime real estate of the Lock Screen. It looks like Apple's given it an accessible notification overhaul too. Question is, can Apple's version compete with the jailbreakers'?