There are quite a few new features, but the Btrfs filesystem is still not the default; it is, however, available and considered suitable for everyday usage.
The latest release from the OpenStack cloud project, OpenStack Havana, is available with 13.1. The release has support for mounting Amazon s3 buckets as local filesystems and includes Samba 4.1 which provides much better support for Windows domains.
There is experimental support for the new display server, Wayland; this includes preliminary support for the Weston support in both GNOME Shell and the KDE Plasma Desktop. Support for ultra high-resolution in applications and shells is improved.
The set-up utility YaST has been ported to Ruby which means it is open to contributions from developers.