For anyone who has not had the chance to read it there is a good article from the New Yorker on airships: http://www.newyorker.com/magazine/2016/02/29/a-new-generatio....
It was a fun light read. Although at the end I just felt like I got a lesson in really expensive, and partially complete vaporware (vapor-commercial-ware?) and was left with little hope for their future.