Ah, whoops. Well, now's your chance! Supposedly it should show up in Fall 2012.
It's 70 years after the end of the first show starring Korra, the new Water Tribe-born Avatar and her journey to Republic City, a unified nation established by Aang and Zuko to find Tenzin, the Last Airbending master, and the son of Aang and Katara. While there, she'll deal with joining up in Bending Tournaments, as well as an anti-Bender revolt from a secret group of rebels known as The Equalists, and the Republic City's Metalbender police force, led by the daughter of Toph Bei Fong.
Kinda a mouthful.
Check it out, the opening sequence of the show: [link]