MLB rosters are slated to drop from 30 to 28 on Thursday, but per Ken Rosenthal, the original plan to have rosters drop from 28 to 26 two weeks after that is being scrapped. Instead, team roster sizes will be 28 from Thursday until the end of the season, and taxi squads, which have been three players, will be increased to five players beginning Thursday.
There has been talk for several days about adjusting the roster limits in the wake of a number of injuries, as well as what is anticipated to be a number of doubleheaders that will need to be played going forward to make up for postponed games.