The three main new features for 2011 are:
1. Pure Analog Control System, which includes analog controls for hitting, pitching, and throwing, adding more precision and accuracy to all three disciplines.
2. Co-op Mode, which allows up to four-player offline or online cooperative play where gamers can split duties covering either the infield or outfield, while also switching off at the plate or choosing the specific batters they’d like to control.
3. Road to The Show returns in version 5.0 bringing a new interactive slider set to the Create Player process and new training modes triggered by the Player Performance Evaluator.
Source: Wikipedia, "MLB 11 the show", available under the CC-BY-SA License.