Check out the Firebug issue page on the fist link under the list of extensions here: http://getfirebug.com/wiki/index.php/Firebug_Extensions

Thanks for the reply, but I couldn't find anything there other than a form to fill in. Was that what you had in mind?

The intention was to put you in contact with the working team for Firebug to ask if there have been any changes. All of their documentation is also located on that Wikipedia page. The last change that I can find is on the Road Map for back in June This is also the first time there is a question about Firebug, as it is not a specialized topic in the forum.

It also looks like they have release notes: https://getfirebug.com/firstrun#Firebug%202.0.4. On the irc channel #firebug I have also pointed them to your question, so I am hoping to get more information.

Ah! I got some info, there does not seem to be any changes in Firebug in regards to Sass, however I have been informed that the sass project is moving to use source maps instead of debug-info. It was also recommended to try the FireSass extenstion. http://getfirebug.com/wiki/index.php/Firebug_Extensions#FireSass

Check out also: Live Editing Sass and Less in the Firefox Developer Tools on the Mozilla Blog Is this still the case for you?