Kindles have long had a history of gaolbreaks. I've scarcely seen a scene as dedicated as the folks over on the MobileRead Forums (https://www.mobileread.com/forums). I notice many of the names associated with this new break as people who were associated with hacking early Kindles back in the early 2010s.

For context, it's been a little while since we've had a fresh gaolbreak for new Kindles. Last one was LanguageBreak, which came out back in 2023 and required firmware 5.16.2.1.1 or lower.