Looks like Cal Poly SLO doing the same thing.
I buy the theory:
They wait for some students decline their offers and accept more borderline students. They do not want to over admitted. However, for those far off applicants, they should release reject notifcation by now . I know my son has a very low chance for SLO, but he did not get any update yet.
Again, next Friday should be last day for our waiting! Please do not extend to April.