Thanks! H4 EAD status changed to "Card is being produced" on Sept 15, but no changes to H4 on that day. H4 and H4 EAD status changed to Approved on 10/18. H4 has to be approved before EAD approval, so I think that the update to case status website might be out of order.
My F1 OPT expired on July 16, so was on temporary suspension until I received my card on 9/23.