"The openSUSE Linux distribution looks like it may be the first major Linux distribution to ship the Btrfs file-system by default. The openSUSE 13.1 release is due out in November and is still using EXT4 by default, but after that the developers are looking at having openSUSE using Btrfs by default on new installations. The Btrfs features to be enabled would be the ones the developers feel are data-safe."

-- source: http://hardware.slashdot.org/story/13/09/19/1352215

Cheers, Peter