For the first time, in addition to 'historical' IAD-FCO, seems like UA also applied for new ORD-FCO service.
The following is UA's request for slots at FCO for S10.

Airport, IATA season, flight code, A (arrival)/D (departure), slot allocated (GMT), slot requested (GMT), period, days of operation, equipment, available seats, origin, destination

1 FCO S10 UA 904 A 08:15 08:15 28MAR 23OCT 1234567 763 183 ORD ORD
2 FCO S10 UA 905 D 10:00 10:00 28MAR 23OCT 1234567 763 183 ORD ORD

3 FCO S10 UA 966 A 06:50 06:50 28MAR 23OCT 1234567 772 258 IAD IAD
4 FCO S10 UA 967 D 09:20 09:20 28MAR 23OCT 1234567 772 258 IAD IAD


I know UA made an announcement just a few days ago, but I wonder if something else is coming in the near future.
I also checked the flight-code number and UA904/905 is still vacant, not assigned to any current routes.