Late last night, iOS hacker winocm published a video
on YouTube demonstrating an untethered jailbreak for iOS 6.1.4 on an iPhone 5. While preliminary, and buggy at the moment, it does appear to look legitimate from a glance.
Well-known iOS hacker ih8sn0w seems to be adding credibility to the jailbreak on Wednesday, as he has made a blog post
detailing to jailbreakers why they shouldn’t upgrade to iOS 7 yet if they want to have a jailbroken device sooner rather than later.
The hacker explains that a jailbreak for iOS 6.1.3 and iOS 6.1.4 untethered is possible in coming days or weeks, and that if users want to have this jailbreak, he recommends downgrading to iOS 6.1.3 or iOS 6.1.4 as soon as possible before Apple closes the window on downgrading for good. He also notes that users already jailbroken on iOS 6.0-iOS 6.1.2 should not worry about upgrading to iOS 6.1.3 or iOS 6.1.4, as their jailbreak is perfectly functional where it sits.
Also important, the hacker explains that users should take the extra steps to save SHSH blobs just in case some kind of miracle discovery happens in the future allowing downgrading on later A5+ devices.
If you plan on upgrading to iOS 7 anyhow, we don’t blame you. iOS 7 has a ton of awesome new features, and the evad3rs hacker team seems confident
that they will have a jailbreak for iOS 7 in the future, albeit we can’t say they’ll have it soon or in the near
In the end, the call is yours. If you want a jailbreak sooner rather than later, stay on iOS 6. If you don't mind waiting several months for an iOS 7 jailbreak, then maybe you would be better off upgrading.