Yep. I know it's not even to close to it's release, but as far as I know, the previous Hobbit soundtracks got leaked on Soundcloud, Youtube and some movie sites a few days before being out officialy. So, I dedicate this thread to such leaks in the future.
And now, just short samples:
http://www.amazon.co.uk/Hobbit-Original-Picture-Soundtrack-Special/dp/B00PBEN6P6

Amazing preview!! I like the choral reprise in Sons Of Durin.