Closes iOS 9 Jailbreak Holes
One of the biggest changes to iOS 9.1 is that it closes up security holes that allow the iOS 9 jailbreak to work on iOS 9, iOS 9.0.1 and iOS 9.0.2.
If you upgrade to iOS 9.1 you will not be able to jailbreak and install Cydia tweaks, jailbreak apps and themes.
It may take some time before there is a iOS 9.1 jailbreak release date, so if this is important to you, it is a good idea to stay on the iOS 9.0.2 update.
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