Mozilla plans to remove all legacy add-ons from their portal. [bleepingcomputer.com]
Support for Firefox ESR 52 will end on September 5, in two weeks, meaning there won't be any official Firefox version that supports legacy add-ons anymore.
Mozilla said today that following this date, it plans to start the process of disabling legacy add-on versions on its add-ons portal located at addons.mozilla.org (also known as the AMO).
"On September 6, 2018, submissions for new legacy add-on versions will be disabled," said Caitlin Neiman, Add-ons Community Manager at Mozilla.
"All legacy add-on versions will be disabled in early October, 2018. Once this happens, users will no longer be able to find [extensions] on AMO," she added.
Isn't modern FOSS great?/s
I can run old Blender if I need. Or go over all the archived .deb from past Debian releases. But Mozilla seems to be special. Time to call the Archive Team or the Wayback Machine.