Well this is a new record, two Firefox releases on the same branch in the same week. Today Mozilla pushed out Fx 184.108.40.206 to fix (for some) a major regression in the Fx 220.127.116.11 release from earlier this week. As is normal practice, most users will get an update notfication within the next 24-48 hours. Alternatively, users can get the new version by going to the Help Menu and selecting Check For Updates… or via getfirefox.com. For more information see the Fx 18.104.22.168 release notes.