Even though the film isn't out until December, the new poster is sure to get fans of first two films excited all over again.

Although it doesn't seem to show anything that important, we reckon a closer look is a lot more revealing.

It shows Aragorn, the King of the film's title, holding what could be a very important sword.

If it's the sword Newsround's website thinks it is, it's called Anduril, and was broken by Sauron thousands of years ago, just before the leader of men, Isildur, used what was left of it to cut the ring from Sauron's hand.

The pieces of the weapon - which was originally called Narsil - were shown in the first film The Fellowship of the Ring at Rivendell.

Aragorn becoming more kingly

According to the books it is put back together, or re-forged, by the elves.