In what has been a fire for many fans of Legend of Korra, this reporter noticed the sudden schedule and channel jump earlier this week. Finally, earlier today, Nickelodeon tweeted this, at least acknowledging a change in time for the show:
Schedule Update: #LegendOfKorra is moving to Friday nights at 8:30pm/7:30c! Tell your friends and let 'em know!— Nickelodeon (@NickelodeonTV) October 1, 2013
The new time hasn't been added by Zap 2 It and Comcast schedules yet, though the later is now listed as TBD (To Be Determined) during 6 pm thru 8 pm. So it's safe to assume Comcast is updating their guide as we speak.
HOWEVER, as you will also notice, the "error" remains unchanged with both. The Legend of Korra episode 6-8 ("Beginnings Part 2" is now listed on October 12) is still airing on Nick Toons. We'll continue to keep you updated on the story if either site fixes the error or if Nick adds anything else.
Or they give false info as they did two days ago like so:
@LegendofKorraWp Current plan is new episodes every Friday at 7pm/6c— Nickelodeon (@NickelodeonTV) September 30, 2013