Following up my post
#2338. New passport for infant, expedited processing, international travel commencing 4/25.
Submitted in-person at USPS 3/3
"Received" by State Department 3/7
Check cashed / In Process 3/8
Approved 4/3
Waiting on print and shipment. The date we can expect to receive the new passport has rolled forward and seems to do so each day that it sits in "approved" status.