Firefox 23, released today, contains the usual mix of security work, standards conformance improvements, and minor bug fixes that we've come to expect from the regular browser releases. On top of these, it sports a trio of changes that you might actually notice.
Most visible of all, Firefox has a new icon. Don't worry—the lovable firefox is still embracing the globe and still has its back rudely turned toward us. The blue marble is, however, much less shiny than it once was.
The other changes are both important for their security implications. First, Firefox at last follows the lead of Internet Explorer and Chrome, blocking mixed use of (non-secure) HTTP content from (secure) HTTPS pages.