Luca Todesco, the 18 year old student and hacker from Italy (@qwertyoruiop), has teased iOS 9.2.1 beta has been jailbroken, according to screenshots shared on Twitter.
The image below shows Cydia running on iOS 9.2.1 beta:

Further proof the jailbreak was indeed real was a post of the kernel dumps from iOS 9.2.1:

Todesco says he does not know if his discovered exploit was the same as the rumoured iOS 9.2.1 jailbreak coming from TaiG.
iOS 9.2.1 beta 2 was released on Monday and there’s no word whether a jailbreak tool will come to light once the firmware version goes public. The game of cat and mouse continues…
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