iOS jailbreak 'evasi0n', released yesterday, has amassed 1.7 million uses in the first day of release. The jailbreak, compatible with iOS 6, and 6.1 has been used on the iPhone 5, the iPad Mini, and the iPad 4. 'evasi0n' is unique as it allows the jailbreak to write data to the iOS kernel, which has not previously been exploited.
Apple has responded to the release of 'evasi0n' through updating its online jailbreak warning page to include the hazards involved in jailbreaking. The page warns users of the instability, battery life, unreliability, and security vulnerabilities that jailbreaking can use, however owners of Apple devices appear to have ignored this warning.