HBO has been ramping up to next month's 'Game of Thrones'' fourth-season premiere lately with everything from behind-the-scenes featurettes to a mixtape. And none of it has been all that clear on what to expect, other than more blood, more battles and a very long and cold winter.

The new trailer for the show, which returns on April 6, is the third for the upcoming season, and like its predecessors, it doesn't shed much light on what's in store for the unwashed clans of Westeros. But it looks mighty awesome all the same.

Following the bloodbath that capped the terrific third season, vengeance seems to be on the minds of plenty of people. The minute-and-a-half trailer -- which you can watch above -- is filled with the usual cryptic talk and clanging swords.

Best of all, the grown-up dragons make a roaring appearance in the clip. And if revenge is indeed going to be a big theme for the fourth season, we can't think of anything else we'd rather have on our side than these glorious winged beasts.

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