The fourth season of Haikyu!! known as Haikyu!! To The Top is being done as a two-cour season with the first cour starting back at the beginning of January 2020.
At the same time, Tsukishima is invited to go to a special rookie select training camp for first-years in Miyagi Prefecture.
The previous seasons were streamed by Crunchyroll with Sentai Filmworks licensing and releasing it on home video in bilingual form.
The second half was set for a summer 2020 debut originally but our friend the Coronavirus gave that a like and it ended up being delayed.