Mobiili magazine has managed an interview: http://mobiili.fi/2013/12/18/jolla-p...-myyntiintulo/ According to it the main delay was a order system related one.
I don't like the way Jolla's interviewee doesn't seem to take any responsibility for the woes, instead tries to make it sound like it is only about the impossibility of making everyone happy. I hope it is just the way the interview was cut, not his real intent.
I hope at least behind the scenes Jolla takes a good hard look at what the actual expectations of the majority of people are, and how in the end they weren't that unreasonable, and respond better next time.