I've actually a few details here and there. Nothing too big. I'm liking what I'm seeing, to be honest. I know KG is a very different kind of movie compared to AC, but I was expecting something like that, so I'm glad it doesn't seem to be the case.
Also, I've seen a Japanese scan circulating with a character not previously shown (his/her face, I mean), so avoid that if you want to go in fresh.
EDIT: I'll take this out of here, as I didn't realize there was a spoiler thread already!