I really want to because it will give us a hint to kh3.

Well from what I understand in interviews and how the game seems to be it seems that 0.2 is like the prologue of the prologue for Kingdom Hearts 3 so I don't really see a reason for it to have a secret movie since the game will lead right into Kingdom Hearts 3.  Unless of course the secret movie is like what the villains are up to and teases as to what their next big move is going to be then I would be ok with that but that would seem like a last cutscene thing to be but who knows 

Well , I honestly don't think we're gonna be getting a secret ending since the game itself is supposed to be a secret ending . It probably will lead us to the beginning of KH 3.

Maybe we'll get a CGI secret movie like those from the PS2 era. One that hints at the incoming battle without revealing who the seven guardians are, maybe by showing every one other than Sora as a faraway sillhouette fighting a hooded Organization members.

I'm pretty sure there'll be a secret ending with extra info for the kh3 title so don't worry, Tetsuya won't dissapoint us

I don't think so since it isn't extremely long. It kind of is like one extremely long secret episode for BbSFM.

It'd be cool if the game did have a secret ending, but seeing as how it's the direct prologue to Kingdom Hearts III, my safest bet would be that we won't get a secret ending, simply for the fact that Kingdom Hearts III would pick up right after 0.2's ending, I assume!