Pale Moon has been updated to Version 27.1. The update is a major development update. Also included are bug fixes as well as security and privacy updates. Many of the security updates are DiD* patches.
Of note: Version 27.1 introduces the so-called "PMkit" modules, Pale Moon's effort to restore most compatibility with Firefox Jetpack/SDK extensions and making it possible for extension developers to convert their Firefox SDK extensions with little effort to a Pale Moon compatible format.
*DiD stands for "Defense-in-Depth" and is a fix that does not apply to an actively exploitable vulnerability in Pale Moon but prevents future vulnerabilities caused by the same code when surrounding code changes, exposing the problem.
Release Notes
Of note: Version 27.1 introduces the so-called "PMkit" modules, Pale Moon's effort to restore most compatibility with Firefox Jetpack/SDK extensions and making it possible for extension developers to convert their Firefox SDK extensions with little effort to a Pale Moon compatible format.
*DiD stands for "Defense-in-Depth" and is a fix that does not apply to an actively exploitable vulnerability in Pale Moon but prevents future vulnerabilities caused by the same code when surrounding code changes, exposing the problem.
Release Notes