The good people at CERT once again alerted me to a new version of Firefox, 45.0. Apparently Mozilla still can’t manage to announce new versions consistently.
According to the official release notes for Firefox 45.0, the new version includes minor improvements to syncing, searching, and HTML5 support. It also fixes several bugs, including at least twenty-two related to security vulnerabilities. On my main computer, Firefox’s About screen already offers to install the new version, but if yours doesn’t, you should grab it from the main Firefox download page ASAP.