In a surprise to many jailbreak enthusiasts the Evasi0n team released a jailbreak for iOS 7.x.x as a surprise early Christmas present. The tool comes with only one caveat…. mobilesubstrate which is required to run many tweaks such as winterboard isn’t fully compatible with iOS 7… yet. An update for mobilesubstrate is expected very soon to fix the issue. So head on over to the source link to get your iOS 7 jailbreak on. But remember, as always in the early days of any jailbreak many tweaks and apps wont be compatible!