I lied. All Hail 화격자 리더. No releases.
(The text in Korean is supposed to translate to "Grate Leader")
While Todesco's tweet does mention "no releases," that does not necessarily mean that Todesco plans to keep the jailbreak for himself. He could pass his findings on to another team, which could then be used to create a complete jailbreak release. Todesco did in fact contribute to the first iOS 9 jailbreak that Pangu had released earlier this year, but Apple had patched that jailbreak with the release of iOS 9.1.
Todesco also jailbroke iOS 8.4.1 after iOS 9 was jailbroken; however there was no official GUI or tool created for that jailbreak. Instead, the source code was posted on Github.
To further prove the legitimacy of the screenshot, Todesco posted the Kernel dumps for iOS 9.2.1.
TaiG, the team behind several iOS jailbreaks, has also been rumored to have an iOS 9.2.1 jailbreak, but Todesco says he's unsure if the two jailbreaks share the same exploits.
Even though iOS 9.2.1 has been jailbroken, it is important to note that the firmware is still in beta (Apple just released the second beta earlier this week). If any jailbreak were to surface, it would likely be after an official iOS 9.2.1 release.
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