Some changes have been made to the All-Star game starting this season.

First, rosters have been expanded to 34 players each. Further, the DH will be used for both teams every season, so the pinch-hitting for the pitcher will no longer be necessary.

Another rule that was added is that pitchers going on Sunday during the regular season before the game will be ineligible to pitch and replaced on the roster.

http://sports.espn.go.com/mlb/news/story?id=5145694