Here is a first look: http://www.digitalrev.com/article/first-look-at-the-2016-wildlife-photographer-of-the-year-images
All of them look great (though I'd say, much as I like foxes, the fox shot is possibly the weaker even if its very neat). However the killer whale photo is outstanding. Maybe not the most vibrant in colours but it matches whale and boat together in a single frame that is the kind of photo I think photographers dream of getting in the same frame. It really brings home the size of the whale compared to the boat, makes the boat feel small!
"The Disappearing Fish" is an amazing image. But I think my favourite is "Splitting The Catch", with the killer whale. And I like that the article called it a killer whale and not an orca.
Considering you can't see the hull of the boat underwater, I'm guessing the whale is much closer to the photographer than the it is to the boat, making it appear larger than it is in reality. Hix