Bird schreibt:
if you want to be on the "bleeding edge" you can take the development versions from this forum (or here: http://forums.mozillazine.org/viewtopic ... &t=1520265 ).
If you want to take automatic updates, when I release a new version I use to announce on the forum, so you need to go to AMO and install the oficial version.
Hmm, der Link is Tod