This is the best summary I could come up with:

Ahead of tomorrow’s official announcement, the Mozilla Firefox 121.0 release binaries have hit the mirrors and it’s keeping to the most exciting Christmas gift for Linux desktop users: Wayland support enabled by default!

Firefox 121 is ready to go with allowing Wayland support to be used by default on modern Linux desktops rather than defaulting to XWayland.

Some Linux distributions and package builds have been using the native Wayland path for a while but now it’s great to see the upstream builds make this default change as we get ready to embark on the 2024 Linux desktop.

X.Org/X11 support remains in place for those not using a Wayland-based desktop enviornment.

Firefox 121 also adds Voice Control command support on macOS, adds an option to always force-underline links within websites, Firefox now includes a floating button to help in creation within PDFs, various CSS feature additions, and other developer enhancements.

Firefox 121 also now supports tail call elimination in WebAssembly for enhancing support for functional languages.

The original article contains 198 words, the summary contains 165 words. Saved 17%. I’m a bot and I’m open source!

I asked chatGPT what Wayland is since the article contains no explanation

In this context, “Wayland” refers to a protocol and a display server protocol used in Linux operating systems. It’s an alternative to the more established X Window System (X11). The article highlights that Firefox version 121.0 has integrated support for Wayland by default, indicating that the browser can now utilize Wayland’s capabilities directly on modern Linux desktops without relying on XWayland compatibility layer, thereby enhancing performance and compatibility with the native display server protocol.

I am new to Linux. What’s the differences between Xorg and Wayland?