The same thing happened to DD for USAFA.. No nomination then, unexpectedly, a VP NOM appeared in her portal. An offer of appointment followed two days later. (Declined for USMA)... Could be the same situation for your DS
Possible early indicator, but no official notice. DD stated that USMA portal indicates a nomination from PA62. This may be from Senator Casey as senatorial NOMs 'MAY' be coded with a 61 or 62.