The Private Browsing feature received a new function called Tracking Protection, which has been designed from the ground up to block various web elements that might be used for tracking your online activity and recording your behavior across multiple websites. Among them we can mention GTK3 integration for GNU/Linux systems and one-click muting of audio on active tabs via a new indicator. Mozilla Firefox 42.0 has entered development, with a first Beta build released on September 23, and the first set of features to be implemented in the final version of the software have already been revealed. Now that Mozilla released version 41.0 of its widely used, open-source and cross-platform web browser for GNU/Linux, Microsoft Windows, and Mac OS X operating systems, the time has come to inform you guys about the upcoming features of Firefox 42.0.