Firefox 7 They are already available and the main novelty that these versions bring us is a better performance in memory consumption.
The announcement has not been made official yet, but since Mozilla FTP can now be downloaded for their respective versions of GNU / Linux, Windows y Mac. Although Linux performance has improved, I don't think it's anything to write home about, there's still a long way to go Firefox to win in the battle of the browsers and that is one of the main problems.
Installation in LMDE.
With the new version it is possible that many extensions stop working, but if we want to install it in LMDE, we just have to open a terminal and do the following:
$ cd ~/ && wget -c ftp://ftp.mozilla.org/pub/firefox/releases/7.0/linux-i686/es-ES/firefox-7.0.tar.bz2
Once the file is downloaded (in our / Home) we unzip it and it will create a folder called firefox. We return to the console to save the previous version and replace it:
$ sudo mv /opt/firefox /opt/firefox.old
$ sudo cp -Rv ~/firefox /opt/
We restart or start Firefox and we can use it in LMDE.