Don't you want to know about Firefox for Android? Okay, maybe not... If your home page looks like the attached screen shot, hover your mouse over the upper right corner of the box to reveal an "x" button to remove it. Success? That may not work in automatic private browsing mode. In that case, you either can tolerate it until it expires naturally, or use an add-on/custom style rule to hide it. On that latter point, see: [https://support.mozilla.org/questions/1129071 How to stop firefox from showing quick links like new features addons etc below the search bar in the home page on initially starting firefox].