The release cycle for e is pretty fast, with new updates coming out every one or two weeks. All updates are announced on the forum, but if you are not a regular there, it can still be hard to keep track.

To help on this situation, user Charles Roper has made an rss feed tracking the e updates:

http://feed43.com/e-texteditor-releases.xml

Add it to your feed reader and you will get automatically notified when new updates are released.