As I read in the blueprint <https://blueprints.launchpad.net/ubuntu/+spec/core-1403-systemd-transition> white-board, the planed scenario is to make Systemd and Upstart to coexist for a while. So the bug <https://bugs.launchpad.net/ubuntu/+source/upstart/+bug/1415256> will probably be reproducible in the next release.