Opinion: Last week, Google announced that it is going to remove extensions using Manifest V2 from its Chrome extensions store at a very near time, and that
… because Mozilla already clarified their position on this last year.
TL;DR
No, Mozilla is NOT ditching manifest v2.
Well what’s happening with MV2 you ask? Great question – in case you missed it, Google announced late last year their plans to resume their MV2 deprecation schedule. Firefox, however, has no plans to deprecate MV2 and will continue to support MV2 extensions for the foreseeable future. And even if we re-evaluate this decision at some point down the road, we anticipate providing a notice of at least 12 months for developers to adjust accordingly and not feel rushed.
… because Mozilla already clarified their position on this last year.
TL;DR
No, Mozilla is NOT ditching manifest v2.
Source: https://blog.mozilla.org/addons/2024/03/13/manifest-v3-manifest-v2-march-2024-update/