As a result of the shortened spring training stemming from the owners lockout of the players this winter, MLB and the MLBPA agreed that there would be a 28 man roster from the beginning of the season through May 2, with a 15 pitcher limit, after which there would be a 26 man roster and a 13 pitcher limit.
It has been announced today, however, that MLB and the MLBPA have agreed to delay the implementation of the 13 pitcher limit until May 30. The rosters will stop drop down to 26 players on May 2, but there will be a 14 pitcher limit in place until May 30.