Drake is historically one of the last schools in all of D1 to announce any schedule details. Right now my guess is they want to see if there will be a season at all before they make any announcements they don't have to.
My other guess is if we didn't commit to anything by March, we won't commit until we are absolutely certain it's going to happen. COVID-19 has already cost Drake (and all other schools) millions of dollars in lost athletic revenue. Loss of Relays particularly damaging to Drake's budget.