They might give it more budget since they seem to be using KG as an advertisement of the movie in a way. But that's just wishful thinking

Something else to note, in this trailer Naruto repeats Obito's exact line from http://www.onemanga.com/Naruto/241/19/

He did hear it at the beginning of part 1 from Kakashi, but his wording was "that person said it". So it kind of implies that he knows about Obito somehow. Maybe Kakashi telling the story to Naruto in the anime triggers the flashback.