Original: Tentatively titled The Last Airbender: Legend of Korra (originally titled Avatar: Legend of Korra), it will be a twenty-six episode mini series that takes place in the same fictional universe as the original show, except seventy-five years later.
Simplified: the creators of Avatar: The Last Airbender. The show, tentatively titled Avatar: The Legend of Korra, will be a twelve-episode mini series that takes place in the same universe, 70 years after the defeat of Fire Lord Ozai.