From TYPE-MOON ACE Vol.11
They were trying to figure out what to do with Kizumonogatari for like 5 years, lol. You thought the TV series of UBW was rushed? Or the old DEEN movie?I think the Kizumonogatari films have been confirmed as annual releases now, but that's the only instance I can think of in regards to anime films, so it's not much to go on. Honestly if they're going to cover enough material for Heaven's Feel to be half decent then I'd want more than a year between each one, UBW felt rushed.