Tell me how am I supposed to test add-ons on this Firefox as a developer before the release then.
Edit : And again, most of my work if not all related to Firefox, I do on the Nightly build. I expect things to break, but this preview ( of which there have been builds for a while already ) is a non-starter.
These builds have been available and in development for months now. They are announced at this time for 'early adopters and developers' ( EXACTLY us ) and still not even a hint of add-ons, or any obvious / apparent interest in them from Mozilla.
The only way to use uBlock Origin and / or uMatrix ( which again, many of us argue are essential, on top of add-on development itself ) on Android today is Firefox. Yet there have been nothing but vague replies these past months about when development from Mozilla will pay any attention to this, arguably its biggest differentiator and advantage compared to the spyware army of Chromium / Chrome clones on the biggest platform accessing the internet today.
These preview builds have been available for months, not just a couple of days.
Nothing I or my co-workers can actually test yet in them.
No official statement about add-on support which should be at the forefront of development in any Firefox version, the best we get is vague replies about it coming later.