just had a thought.
anyone remember the jessies girl teaser video that was leaked? that was worked on earlier during the year, there was an article which i can't find that the production company talked about the making of it etc.
anyway. my point is. the only phone in that teaser is the n950.
It seams like the N9 was not planned for so soon a release and the n950 was the planned release with the n9 following up the next year. Then came the hiccup and what looks like the rush to have the n9 market ready. This would explain a few things to be honest.

again i could be completely wrong but thinking back at all the rumours it sorta fits the bill.