Some details revealed in the October 2012 issue of Animage specifically state that SHAFT’s upcoming “Magical Suite Prism Nana” is “not a magical girl series” – but instead, simply a bishoujo based one with abnormality.
This perhaps confirms two things, the first being that Magical Suite Prism Nana is likely to be a televised series – as else, one has to question why it’s so elaborately formulated. Not to mention, it’s highly doubtful that this is a film – for obvious reasons. It’s very unlikely SHAFT would be outputting another theatrical production beside Madoka Magica – and SHAFT already is not a studio that delivers straight to the big screen.
Now secondly, moving to the subject at hand, and recalling the PV, think back on what it showed us – we explicitly saw the sight of Kantoku’s three cute bishoujos transforming, and yet, this is supposedly “not a magical girl series”. The subsequent result is difficult to comprehend in this case – if the girls can transform, however are not magical girls, one would expect the transformation to be something more encompassing, e.g., human to animal, or essentially shapeshifting.
Then again however, the material we’ve seen thus far could be deceiving in that it’s possibly hardly a trickle of what Prism Nana will be based around – the extent of the transformation, how it relates with the lives of the girls, and what exactly they can transform to, is never touched upon whatsoever.
The potential is still ready to launch at any direction – and it seems we still hardly know any of the truth of this series as of yet, despite what meager pre-release material has been released.