It has been confirmed that the latest iOS firmware release kills the vulnerability exploited by evasi0n for iOS 7.x untethered jailbreak.
If searching for a new vulnerability takes as long as it did the last time around, then it seems that an iOS 7.1 untethered jailbreak is out of the question at least for a few months.
Only a couple of hours ago Apple finally released iOS 7.1. This firmware had been in beta stage for a few months now, and it was expected since then that it would kill the vulnerability, which it does. The belief grew stronger as every incremental update released after iOS 7.0 did not bring a patch for the vulnerability exploited by evasi0n jailbreak tool. iOS 7.0.6 was a recent incremental update that was focused solely on plugging security vulnerabilities, even it did not kill the jailbreak.
There’s no doubt in the fact that the fatal blow has been delivered by iOS 7.1. Well known iPhone hacker @MuscleNerd has confirmed that the inevitable has finally happened. The smart thing to do for those looking to retain their jailbreaks is to refrain from updating to iOS 7.1, because once you do that, its impossible to downgrade to iOS 7.0.6. Only iPhone 4 users can do that, since its bootrom exploit can be used to push jailbreak code. No other supported device can downgrade from iOS 7.1, and even they need to have the relevant SHSH blobs saved.
There’s no saying when an iOS 7.1 untethered jailbreak will be ready. Jailbreak developers will certainly look at the possibility, but its no secret that its getting harder and harder to find usable exploits as iOS progresses. The future of jailbreaking doesn’t seem to be too bright.