Or when will the 4th season appear on Netflix
Haikyuu has been completed in the manga for as long as I know
therefore there will be no continuation after the 2nd half of the 4 season / 5 season
The fourth season has not yet ended and will not be dubbed until next year, before that it will probably not end up on Netflix.
Nothing is known about a fifth season. There will probably be information towards the end of the second half of the fourth season (start October 2nd).
But that is far from the last season
I thought when the manga is finished there will be no more continuation i anime after the 2nd half of the 1st season
The manga goes much further than the upcoming season (half)
But the manga was completed on oikawa's birthday.