'Canonical's Mark Shuttleworth revealed today that they're planning to make ZFS standard on Ubuntu. They are planning to include ZFS file-system as "standard in due course," but no details were revealed beyond that. However, ZFS On Linux contributor Richard Yao has said they do plan on including it in their kernel for 16.04 LTS and the GPL vs. CDDL license worries aren't actually a problem. Many Linux users have been wanting ZFS on Linux, but aside from the out of tree module there hasn't been any luck in including it in the mainline kernel or with tier-one Linux distributions due to license differences.'

-- source: http://news.slashdot.org/story/15/10/06/210202

Cheers, Peter