GNU Emacs 24
GNU Emacs major version 24 is expected to release in 2012. While still in the stage of development, Emacs 24 is considered to be stable enough for every-day use.
Where to get
For debian user, an Emacs snapshot can be found from emacs.naquadah.org.
Lexical scope in Emacs Lisp
Custom color themes
Emacs now has a native Theme customization support.
- GNU Emacs News, accessed by [C-h n] (or M-x view-emacs-news) in Emacs.