Pixar Animation recently released a teaser trailer for their newest film, "Monsters University". This will follow the story of Michael Wazowski and James P. Sullivan before the events of Monsters Inc, while the two are still in their college days.
The teaser echos real life cheesy college promos, with student testimonials, voice over, the works.
Pixar also released some concept art from it's future films:
The Good Dinosaur (set for 2014)
The Inside Out (which takes place inside the human mind-set for 2015)
And an unnamed film that takes place during the Dia De Los Muertos (The Day of the Dead).
Monsters University will be released in Summer 2013