Earlier today, but later than the midnight release time, Apple released the much anticipated iOS 5.
Admittedly, this will disappoint JailBreak fans, hackers and whatnot, as none of the jailbreaking tools, toys and tweaks will work on iOS 5, and iOS 4.3.5 is still a tethered solution.
That being said, this could possibly put a dent in the jailbreaking market due to some of the new features.