In an interview with Germal publication t3n, Beard says that the new version might include things like integrated VPN service as well as free and safe cloud storage, although not all features have yet been decided.
He ensures that in no universe is Mozilla going to get rid of the free version, however. This also won't affect the new features that have already been promised to the free version in upcoming updates.
Firefox has lost much of its traction to Google's Chrome over the years, and it currently hold the second place in market share with measly 10%, when it topped 30% around ten years ago before Chrome.
According to the company this is one of the ways it is seeking new revenue streams.
The premium version will be entering a test phase in October.