Are most of the existing add-ons being sacrificed due to adding support for WebExtension?

Tony Mechelynck antoine.mechelynck at
Wed Nov 22 11:38:28 UTC 2017

On Wed, Nov 22, 2017 at 11:42 AM, Aceman <acelists at> wrote:
> Hi, actually Firefox 57 is already released as stable. It artificially killed all old/XUL addons and only WebExtension addons work. I would have lost 80% of my Fx addons if I upgraded to 57. Yes, 59a1 is the nightly development version (as is TB).

You're right, I miscomputed; I forgot that Aurora is now one with the
snows of yesteryear, so a1 (the "Nightly" nightlies) is now only two
version numbers ahead of the release.

Best regards,

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