Not yet at least. Currently both are still supported, it's just that the core repo is now in git syncing to hg rather than the other way around. But I think hg

Not yet at least. Currently both are still supported, it's just that the core repo is now in git syncing to hg rather than the other way around. But I think hg support is going away. We hg enthusiasts at Mozilla are mostly fleeing to Jujutsu.