Firefox 188.8.131.52 is going to be released within the next few days in order to fix a critical security update that was found earlier this week. For those people that cannot wait for the build to officially be released please visit the download link below. These are candidate builds which are very likely to be released as the final version but they are undergoing some testing to make sure they are stable.
The download list is quite long because of the huge list of languages available. If you are looking for the full installers then you will find that the list for those start about halfway down the page. This build seems to be running nice and smooth for me (of course it is such a minor update that I shouldn’t notice any differences).