It’s that time again: there’s a new major version of Emacs and, with it, a treasure trove of new features and changes.
Notable features include the formal inclusion of native compilation, a technique that will greatly speed up your Emacs experience.
A critical issue surrounding the use of ligatures also fixed; without it, you couldn’t use ligatures in Emacs 27 without crashes. So that’s good news indeed also.
Source: What's New in Emacs 28.1?, an article by Mickey Petersen.