It’s been about a year since our last update regarding Manifest v3. We have started an implementation of Manifest v3 and collaborated with other browser vendors in the WebExtension Community Group (WECG) to shape the future of extensions.
Today, we’re kicking off our Developer Preview program to gather feedback on our implementation of MV3. You can read more about our choices and plans at Manifest v3 in Firefox: Recap & Next Steps on our Add-ons Blog.