I must say, when watching the original series, this Korra guy Piqued my interest as there seemed to be quite some story there that we weren't let onto.
Korra is going to be a woman. She is from the Water Tribe. She already mastered Water, Earth, and Fire. The story is going to revolve around her with Aang's son teaching her airbending and her trying to figure out the Steampunk city and the "dangers" of it or something. Apparently, most of the main characters are still going to pop up. Zuko is dying on his deathbed, but is still Fire Lord, Azula is to make an appearance, Aang is going to be Korra's guide like Roku was to Aang, and apparently Sokka is going to be in it, too. Rumour has it, it takes place about 100 years after the original series.
Granted I am hyped to watch it, but after what I think was a disappointing ending to the series, I'm not sure how I'm going to react to the show. I'll watch it, but I'm not getting my hopes up.