The decision was made directly by Universal and was communicated on official Facebook page of the saga.
“To our family of Fast & Furious fans around the world. We feel all the love and anticipation you have for the next chapter of our saga. Precisely for this reason it is particularly difficult to let you know that we have to postpone the release date of the film. It is now clear that seeing the film this May will not be possible for all our fans around the world. We will therefore move the release date to April 2021, with the premiere scheduled for April 2 in North America. We understand the disappointment that we will have to wait a little longer, but this decision was made by putting everyone's safety before any other consideration. The move will allow our entire global family to learn about the new chapter together. See you next spring ”.
L'uscita di Fast & Furious 9 it was initially scheduled for May this year, but the stringent measures taken to contain Coronavirus have made Universal opt for moving the release date to theaters.
We will therefore have to wait for next spring to discover the developments of the famous saga starring Vin Diesel and that will see the entry into the cast, among others, of John Cena.