On April 1, MLB officially informed teams that the 2021 MLB Draft will be 20 rounds.
The news is confirmation of the expected. In 2020, the Major League Basball Players Association agreed that the draft could be cut to as few as twenty rounds in 2021.
Theoretically, the number of rounds could have been more than twenty, but after the MLBPA agreed to 20 rounds, the decision essentially rested with the owners, who typically want to minimize the amount they spend signing ametuer players. The draft size reduction pairs well with the recent reduction in the number of MLB-affiliated minor league clubs.