Earlier in the month, security researcher @pattern_F_ from the Ant Security Lab Tweeted a demo video of what appeared to be a successful jailbreak attempt on an iPhone 11 running iOS 14.0. It was later revealed that the exploit used would potentially work on iOS & iPadOS firmware versions up to and including 14.3.
While it was unclear whether @pattern_F_ would release the aforementioned work to the general public, the news was quickly drowned out by the subsequent release of the cicuta_virosa kernel exploit for iOS & iPadOS 12.0-14.3 by @ModernPwner.