We reported earlier that Canonical released a minor kernel update for its Ubuntu 12.04 LTS (Precise Pangolin) operating system, and now the company announces a new kernel update for Ubuntu 15.10 (Wily Werewolf).
Publicly, Canonical Software's announcement that Ubuntu 16.04 will include the ZFS filesystem sounds like a potential violation of the second version of the GNU General Public License (GPLv2).
The fact that ZFS's license, the Common Development and Distribution License (CDDL), is a free license but incompatible with the GPL makes the case unusual, but the problem routine.
However, the implications could prove extraordinary -- in fact, they could indicate that, contrary to years of assumptions, the GPLv2 does not protect the Linux kernel at all. Many other projects could also be affected.