Ext4 snapshot concerns

The real problem with btrfs is not its lack of stability(though that is still somewhat true), but the fact that it still doesn't have a working fsck! It was supposed to be almost ready by february, but, since then, no updates on its status have appeared. It would be useful to have more news about the status of that project or (maybe even better) to have an actually open development of it(currently code seems to be committed only when it's already considered ready for use).