https://lists.gnu.org/archive/html/emacs-devel/2016-09/msg00451.html
Highlights of this release include:
- Emacs can now load shared/dynamic libraries (modules)
- Experimental support for Cairo drawing
- Enhanced network security (TLS/SSL certificate validity and the like)
- New minor mode 'electric-quote-mode' for using curved quotes as you type
- Character folding support in isearch.el
- Xwidgets: a new feature for embedding native widgets inside Emacs buffers
- New and improved facilities for inserting Unicode characters