We also wanted to take this opportunity to address a couple common questions we’ve been seeing in the community, specifically around the webRequest API and MV2:
The webRequest API is not on a deprecation path in Firefox
Mozilla has no current plans to deprecate MV2 as mentioned in our previous MV3 update
That said, I believe Firefox users have gotten a lot of benefits by having extensions made that work in both Firefox and Chromium-based browsers. I don’t believe there will still be as much effort for a Firefox-only extension but I believe there will be a sufficient number of motivated users and developers to still develop blockers and other extensions that take advantage of Firefox continuing to support MV2 and webRequest.
Until MV2 API is shut off completely. What will FireFox’s V2 do then?
https://blog.mozilla.org/addons/2024/05/14/manifest-v3-updates/
That said, I believe Firefox users have gotten a lot of benefits by having extensions made that work in both Firefox and Chromium-based browsers. I don’t believe there will still be as much effort for a Firefox-only extension but I believe there will be a sufficient number of motivated users and developers to still develop blockers and other extensions that take advantage of Firefox continuing to support MV2 and webRequest.