As per ANN, the Haikyu!! manga will be receiving a new third TV anime adaptation slated to premiere sometime in fall 2016.
The announcement for the third season of the Haikyu!! anime series will be made on the 16th edition of the weekly Japanese magazine, Shonen Jump in this coming Saturday.
The magazine teased earlier last week on its previous issue that Haikyu!! Volleyball manga will get a big announcement coming on March 19.
Viz is going to release the manga in the US starting in July, 2016.
The first season of the television anime series had a run of 25 episodes and aired from April 6, 2014 to September 21, 2014. The currently airing second season premiered in October 4, 2015 to continue until Mars 27, 2016.
Here is the synopsis of the second season:
After losing against Aoba Jousai, the whole Karasuno team feels at a loss. Especially Kageyama and Hinata, who seem to be the most devastated about the defeat. However, the team soon cheers up when a chance for them to go to Tokyo appears. During their training camp there, Karasuno will meet new formidable opponents. (Source: myanimelist)