As mentioned in the Three Pillars of Firefox from July 2015. The Uniquely Firefox Pillar hinted towards an improved private browsing mode. In the past Private Browsing would not show up in your history, or keep cookies and temporary files. So, now Mozilla has expanded on what happens in a private browsing session and has rolled this out in the current Firefox 40 Beta. Our hypothesis is that when you open a Private Browsing window in Firefox you’re sending a signal that you want more control over your privacy than current private browsing experiences actually provide. The experimental Private Browsing enhancements ready…