The NCAA has released the 2012-13 rulebook along with a video that details the rules changes and points of emphasis adopted by the NCAA Ice Hockey Rules Committee for the 2012-13 season.
NCAA Rule Book (.pdf) | NCAA Rules Video | Key Differences in NCAA, NHL Rules
Significant rules changes for the upcoming season include:
The video also clarifies topics such as contact to the head penalties, the use of video review and goals scored during a delayed offsides situation.