Thanks to Zap2it.com we now have full confirmation of the episode title for K103 , It is “The Revelation”.
It will air April 21st at 11am EST
Here is the episode Description
Korra attempts to learn more about the Equalist movement through infiltration.
So this is set up to be a great episode, we will get more on The Equalists after very little focus on them in the first two episodes.