Could this the human form of the shape-shifter Beorn? (Major Spoilers!)
The 2014 Hobbit Calendar from SD Toys had a very interesting image on its back cover. It appears to be a still of Beorn in his human form. Sadly, I cannot post the image because of copyright reasons, and TheOneRing.net has already been asked to remove it from their site. For those of you who did not get to see the image, there is a detailed description of it beyond the break.
Beorn, played by Swedish actor Mikael Persbrandt, is as wild and ferocious in his man-shape as he is in his bear-shape. The figure in the photo is huge, and though obviously a man, there are still traces of bear in him. The most striking feature is the hair. It spikes up at least a foot above his head in wild mohawk, which runs down the middle of his back and ends near his waist. You can see all this because he is lacking a shirt, showing off a muscular physique.
As for his surroundings, Beorn is standing in a green pasture next to a stump, probably a chopping block, for there is a lot of firewood lying around on the ground. Behind Beorn, in the far distance, you can see the Misty Mountains, at least, that is what I assume them to be. In the nearer background, there is some high brush bordering the pasture, fencing in some grazing goats.
That is about as detailed a description as I can give, but if that does not satisfy your curiosity, you may know that the "leak" has not yet been entirely cleaned up, so that image is still out there. You will not find it on this site, but, if you look hard enough, you will find it.
Sources: TheOneRing.net, ComicBookMovie.com