I just got a notice from Mickey that the latest version of Mastering Emacs is out. It is, when you think about it, a modern miracle. You buy a really great book on Emacs once and keep getting the new editions for free.
This version brings the book up to date as of Emacs version 29. The two megafeatures of version 29 are Tree Sitter for finally rationalizing syntax highlighting and Eglot to provide smart completion and other “modern” IDE-like functionality. But as Mickey says, there are a “million” other, smaller improvements.
Speaking of buying Mastering Emacs, Mickey is having his usual new edition sale on the book. For a little more than the next day, you can get the book for 29% off. If you have any interest at all in Emacs, you really should have this book and now is the perfect time to get it. By the time you read this, the sale will be almost over so act now if you’re interested.