To be fair most anime movies are super, duper non canon if they are based on a series.
Hell last year we got two completely anime free movies in Akira and Summer Wars and then two series movies. Badlands Rumble is non-canon though nothing is preventing it from being canon and Conquerer of Shambala is the canonical ending to the series.
For most series movies come in two forms.
1. Condensed retellings of the series. Most Gundam movies are like this, as are the two EVA movies already shown.
2. Complete Non-Canon™. All Pokémon Movies, All DBZ movies except Battle of the Gods, All One Piece movies (including one of the movies that retells a story arc!) All Bleach Movies. All Naruto Movies. The FMA:B movie.
Very rarely do you get something like Endless Waltz or Conquerer of Shamballa that acts like an epilogue.
EDIT: Diamond Dust Rebellion is the worst possible outcome. If they want to stick with stuff that's never aired though I know they never showed the final Bleach movie and I don't think they aired the third one either. We're already past the point that the first Naruto Shippuden movie came out as well.