On November 11, 2011, Mozilla completed the merge of Firefox 10.0 on to the Aurora development channel for both Desktop and Android.
What’s New in Firefox Aurora:
Firefox 10 is scheduled for release on January 31, 20112.
Important! Add-on Compatibility Reporter is not correctly working with Firefox (and Thunderbird 10). You will need to go into about:config and manually add the Boolean Preference extensions.checkCompatibility.10.0a and set to FALSE.Once you restart Firefox your add-ons should be working again.