I vaguely recall reading on the website FAQ or admissions page somewhere quite a while ago that they were trying to do things on a semi-rolling basis? I could be wrong, but it would explain some of this first cycle weirdness.
ETA: So the website currently says that notifications should be out by March 27th, but doesn’t mention anything about rolling admissions (I could have sworn that it did before, though—am I going crazy?). It’s still feasible that they may have sent out a round of acceptances for their top candidates that they interviewed earlier on back in February with the intent of putting out decisions for the others by that March 27th date. There are a few other vet schools that do admissions in this way, so it’s not unprecedented. Will be interesting to see if the process changes next cycle since they’ll be participating in VMCAS.