From looking at [https://www.mozilla.org/en-US/firefox/channel/#beta the downloads website] it looks like developer edition has indeed replaced aurora. So aurora is no more, except for the android version. I'm surprised that bookmarks and addons disappeared. If you use firefox sync you would be able to get them back by signing into it. I would imagine the logic is that mozilla thought the only reason to use aurora would be if you were testing new html features.

See also this mozillaZine forum thread. *http://forums.mozillazine.org/viewtopic.php?f=23&t=2886617 *https://blog.mozilla.org/blog/2014/11/03/the-first-browser-dedicated-to-developers-is-coming-2/ *http://www.ghacks.net/2014/11/05/a-first-look-at-firefoxs-new-developer-edition/ *https://developer.mozilla.org/Firefox/Developer_Edition/Reverting

https://support.mozilla.org/kb/recover-lost-bookmarks-firefox-developer-edition