Mozilla has officially announced their Flash discontinuation roadmap. The company joins other vendors, and will stop supporting Flash in January 2021.
Firefox version 84 will be the final version to support Flash. On January 26, 2021 Mozilla Firefox 85 is expected to be released. It will be a version without Flash support, "improving our performance and security", according to the company.
For users on Nightly and Beta release channels, Flash support ends today, on November 17, 2020 in Nightly, and on December 14, 2020 for the Beta channel. There will be no setting to re-enable Flash support.
If Microsoft hasn't changed its plan regarding the Flash removal, it will be discontinued in the Edge Beta on December 7th, 2020, and in the Stable version on January 21st, 2021. It is already dead in Canary.
Adobe will stop distributing and updating Flash Player after December 31, 2020.
Adobe Flash is now the only NPAPI plugin that Firefox currently supports. Chromium-based browsers will also drop Flash support starting with Chromium version 88 which is coming on January 2021.