This movie is being sold as a lot of things. One of the main things I have heard about it is how it will bridge the uncanny valley. It resoundingly fails to do that. It looks like World of Warcraft.
Don't get me wrong, it's pretty, but District 9 bridges the uncanny valley, this one does not.
It's all in the eyes and the corner of the lips. Basically, in high concept computer animation such as this facial movement looks very stiff and stilted like everyone has had their eyelids stretched and injects botox into their eyebrows and lips, in otherwords, they have sacrificed expressiveness for fullness. Meaning that the stills will look great, in terms of the animation it will be lacking.
I still look forward to it as I look forward to every sci fi epic, even though the last three major sci fi epic trilogies have pretty much straight up sucked: Star Wars, Lord of the Rings, The Matrix. I find the overwrought environmentalist paganism to be a little sketchy, but I'm willing to watch Fern Gully meets Halo. ;)