The Legend of Korra just finished its run as one of the most critically acclaimed and beloved modern animated series ever (along with its previous incarnation The Last Airbender). It was a troubled show, having survived shifting timeslots, awkward adaptations, and a few sorta-kinda cancellations, but wow they ended on a high note because the series officially canonized the fandom's favorite one true pairing (sorry, makorra fans). According to a statement from the series co-creator:
Korrasami is canon.You can celebrate it, embrace it, accept it, get over it, or whatever you feel the need to do, but there is no denying it. That is the official story. We received some wonderful press in the wake of the series finale at the end of last week, and just about every piece I read got it right: Korra and Asami fell in love. Were they friends? Yes, and they still are, but they also grew to have romantic feelings for each other. Was Korrasami "endgame," meaning, did we plan it from the start of the series? No, but nothing other than Korra's spiritual arc was. Asami was a duplicitous spy when Mike and I first conceived her character. Then we liked her too much so we reworked the story to keep her in the dark regarding her father's villainous activities. Varrick and Zhu Li weren't originally planned to end up as a couple either, but that's where we took the story/where the story took us. That's how writing works the vast majority of the time. You give these characters life and then they tell you what they want to do.
Needless to say, the fan art community took the news well. In fact, we wish more artists celebrated their favorite TV shows with awesome drawings of people kissing each other (checks tumblr) oh wait, they do.