928 is scheduled to depart GSO tomorrow and will be the first A321 with the new cabin configuration. Take that exit date with a grain of salt though, seeing as most of these birds will show their exit flights scheduled but then cancelled. 519 was ferrying to Detroit this afternoon from GSO after a maintenance visit and scheduled to operate a revenue flight to SEA but has diverted back to GSO.

https://www.flightradar24.com/data/aircraft/n928va

https://www.flightradar24.com/data/flights/as9451