At Impact 2014, Doug Balog and Mark Shuttleworth provided a glimpse of the work completed on POWER8 systems with Ubuntu 14.04 from Canonical.
In a Keynote presentation available on Youtube, Mark Shuttleworth's team does a demo of deploying 8 KVM guests - starting from scratch, installing the OS on each guest, the application software, configuring, running, inter-connecting, and ready for work. JuJu's and Charms are actually pretty slick. Something good to learn in the coming days.
On the Youtube video, fast forward to around 39:45. The demo itself starts around 42:00. The full presentation wraps up around 49:00. Good use of your time!
One of the classic quotes from Mark was that Canonical ported over 40,000 of the packages to Power8 and Little Endian mode over a period of about 5 months. In the vast majority of cases, re-compile and run was easy to accomplish and demonstrate.