NEW Firefox 58.0.1 Will been released by Mozilla. the Firefox builtin has been UPDATED at this time Staged roll out?, Firefox 58.0.1 breaks compatibility with older versions of the browser and Firefox ESR. Users who want to downgrade are advised to back up their profiles prior to installing the update. Release notes NOT UPDATED https://www.mozilla.org/en-US/firefox/58.0.1/releasenotes/ here is more info https://www.ghacks.net/2018/01/29/mozilla-firefox-58-0-1-fix-for-white-pages-on-windows/
I just checked mine and it went from 58.0 to 58.0.1
FF 58.0.1 is up and running here and the release notes have been updated.
It seems to have fixed an issue I was having where some pages were not loading when opened in new tabs.