Many of us were hyped for the Nickolodeon Upfront 2013 since it was likely there'd be news about Legend of Korra, as there was for the 2012 Upfront Event, but unfortunately, we're out of luck.
"For the 2013-14 season, the network will also roll out new episodes of returning hit animated series, including season two of The Legend of Korra, SpongeBob SquarePants,The Fairly OddParents, Winx Club, T.U.F.F. Puppy, Kung Fu Panda : Legends of Awesomeness and Robot and Monster."
That was pretty much all they said about it. Gutted.
Check out the full report here: http://www.nickandmore.com/2013/02/26/nickelodeon-upfront-2013/
I'm still hoping this is a St. Patricks Day prank or whatever, because it's hard to believe that after this time, we don't get so much as a reveal date. Last we heard, Bryke were on color-corrections, so it's likely Korra will air sometime THIS year, if not early next year. Cross your fingers and hope for the best.