yes AZ floette is a special form, like the red flower floette or the yellow one.
some people believes that the model of az floette exists in the game ONLY because there is the cutscene, so it is not a playable pokemon (like the pokewood studios if you know what i mean) but i personally think (or, i hope) it is playable. because the GL thumbnail page have a fifth thumbnail for floette only, instead of 4, so if they did that it is because they condiered az floette to be tradable, and so playable. otherwise they would have not done that. and, if so, as EVERY single pokemon have a shiny form, AZ floette has a shiny form (to be seen, even if it will never be released)
that said, we have to ask to people like smealum if AZ floette is playable or if it gives errors/turn into bad egg. if it has a box miniature and if it is storable in the bank, and so on