The latest Emacs release is now added to the repository! Here's the huge list of changes and new features: http://www.gnu.org/software/emacs/news/NEWS.25.1. Of course, not all the fancy new stuff is compiled in due to the limitations of what's available on the platform, but it seems to be working just fine otherwise.

The package name has changed. To upgrade, you need to install emacs25 (this will also uninstall emacs24). Enjoy!