Sorry about that, the title came from the news source that published my interview. I picked the quote from the article for the HN title because I thought it was much more interesting ;-)
Hey! We're actually running ZFS on FreeBSD: the HybridCluster stack is built on FreeBSD jails. We're looking closely at ZFS on Linux though - when we started work on our HA stack ZoL wasn't nearly ready, but now it's looking promising - so we're going to be working with Brian Behlendorf on that. If/when we do a Linux port of HybridCluster, we'll be looking at using Docker for the container part, so HybridCluster could be stateful HA Docker with live migration before too long ;-)
In other news, we're gonna be hosting open-zfs.org on behalf of Brian, Delphix, Joyent and all the other community contributors. Keep an eye out for that, we'll be announcing it on HN as soon as it's ready.