I think that SUSE are trying to differentiate themselves by supporting Btrfs, which is a nice move on their part. Btrfs extensive features can be very useful in quite a few scenarios, so its wider adoption is more than welcome. I know quite a few people that have been longing for ZFS's functionality for years and Btrfs provides the most important (IMHO) ones.

For some time Btrfs has been rapidly stabilizing and I expect the other distros to jump ship and provide support as well.