From Twitter I found a link to Peter Suber, Open Access News where there is a story of MIT’s unanimous faculty vote to adopt an Open Access mandate that gives the University the right to archive and make available their articles. Like the Harvard mandate, faculty can opt out if they have a good reason.
Each Faculty member grants to the Massachusetts Institute of Technology nonexclusive permission to make available his or her scholarly articles and to exercise the copyright in those articles for the purpose of open dissemination.