Apples has had it with all your "freedom". They're changing the locks.
The End Of The Jailbreak Era Is Upon Us
Apple is set to release IOS 7.1 any day now and as many jailbreakers now know thanks to access to the IOS 7.1 beta, this new IOS update will include patches that break the evasi0n jailbreak tool for good. This means that we?re likely to see a lengthy period, maybe even as long as a year, before another jailbreak is released.
The End Of The Jailbreak Era Is Upon Us - Forbes