Apple has just released the new iOS 9.2, and lots of users affirmed the bugs fixed and performance improvements after upgrading their iPhones. However, with a view to the RAM and hardware configuration, it’s not suggested to update the iPhone 4s to iOS9.2 though it’s possible.
Currently some source also indicated Pangu had prepared a jailbreak for iOS 9.2 Beta 4 and that they were waiting for the official iOS 9.2 release in order to confirm the particular loopholes were not restored.
As you know, the Apple released iOS9.1 to restore all loopholes, which were used by Pangu to jailbreak iOS 9-9.0.2, eight days later after the iOS 9-9.0.2 jailbreak came out.
In fact, at present there is no reliable evidence that the Pangu Team have finished the development of iOS 9.2 jailbreak untethered. But if they have, the new iOS 9.2 jailbreak will come soon.