Time FrameApril 25-26
A press event is being held on April 25th and 26th and it is expected that many Monster's University related items will be addressed. This includes a 24 hour event to be held on May 24th, Monster's University changes at both the Monster's Inc Laugh Floor and the Hollywood Studios meet and greet location, and a Monster's University wrap on one of the monorails.
April 25, 2013: A Disney Press Release confirmed many of the expected details as well as highlighted recently opened items like New Fantasyland, Test Track, and more.
April 24, 2013: InsideTheMagic has posted the following video of Spaceship Earth with a Mike Wazowski projection
April 24, 2013: The Disney Parks Blog reveals photos of the Monster's University themed monorail
April 22, 2013: StitchKingdom.com has reported that announcements will include changes to the Monster's Inc Laugh Floor, changes to the Hollywood Studios Meet and Greet, a 24 hour event on May 24th, and a Monorail wrap all themed to Monster's University.
March 12, 2013: InsideTheMagic is reporting via their Twitter Feed that a Monster's University themed Press Event is planned for April 25-26. It is expected that additional preview information for the Seven Dwarfs Mine Train attraction will be revealed as well as other information.