When Apple unveiled iOS 5 last Summer, it mentioned that the update included over 200 new features. Among the additions were several features that closely mirrored tweaks and utilities from within the jailbreak community.
In fact, there were a lot of folks that thought that iOS 5 would be the beginning of the end for jailbreakers, but we aren't too worried. Not only have we had an iOS 5 jailbreak for months, we also have tons of compatible tweaks and utilities...