Book 3: Episode 4 In Harm's Way ScreenshotNickelodeon recently confirmed an update regarding the schedule of Legend of Korra's Book 3 through their Twitter in response to a tweet. A Korra-fan tweeted, asking them if episodes 4 & 5 will be premiering the same day. Unusually enough, Nick responded, confirming that the two episodees will be airing together.
The legend of Korra Book 3 Episode 4 Chapter Title Sequence

Personally, I found it quite surprising due to the fact that Nickelodeon has had a reputation for ignoring Korra fan's and their yearning tweets for season updates. Nonetheless, it was confirmed and now we have the follwoing information in our hands: Episode 4 titled In Harms Way and episode 5 titled The Metal Clan will be airing together on Friday, July 11, 2014. Of course, their will be no new episodes for the previous week due to Independence Day in the United States. Also released by Nick was an exclusive clip from Episode 4 of Book 3: