We know that only Pangu team confirmed their plans to jailbreak iOS 10 via their Pangu10 utility.
We know that Pangu10 will be untethered jailbreak. It's mean that jailbreak with Cydia Tweaks is not lost after rebooting the device, unlike the tethered jailbreak, but works perfect on all jailbroken devices. Now this is the only way to jailbreak iOS 9.1. Pangu confirmed that iOS 10 Jailbreak tool will make untethered jb. It's very cool news.
Some sources leaked information that Pangu will be released not untethered, but semi-tethered jailbreak like Jailbreak iOS 9.3.3 /9.3.2. This method makes it possible to restart the device without losing the ability to use it, but after a reboot the device all the functions of the jailbreak is lost. You must re-jailbreak device with special Pangu Assistant utility.
Don't forget that if you find on the web "leaked" download links with untethered iOS 10 (or iOS 9.3.4), you can check it on our confirmed iOS 10 Jailbreak Supported Devices List. Don't download or don't install it, if you can't see such iOS version in our list!!! When Pangu Team will be released Jailbreak iOS 10 tool, you can download it via such links >> Pangu Download.