While others have mentioned UI changes, I want to highlight recent core improvements. Emacs Lisp is now a much better language. In particular, we have: * lexic

While others have mentioned UI changes, I want to highlight recent core improvements. Emacs Lisp is now a much better language. In particular, we have: * lexical scoping and fully correct lexical closures * cl-lib integrated into core * a package manager * Common-Lisp-style generic places (i.e., setf support) * A much better advice system (add-function and advice-add) * A very good testing framework, ERT, and a test suite that uses it Emacs is a much nicer development environment than it was ten years ago.