Went to see it yesterday with my cousins. Apart from our 3D glasses not working (and us watching the film through them backwards) it was amazing!!!!! If you haven't seen it yet or aren't planning to I'm ordering you to go now!!!
I don't want to spoil anything but I will say this: there were a few things in the film that weren't really explained or were just left so there might possibly be more films in future. Usually I would say to stop but I love JRR Tolkein's series and I'm quite excited at the though of more.