I have a similar question....

This is what's showing:

United Airlines 0284

Flight: Confirmed

Feb 04 08:55 AM depart SFO
Feb 04 12:30 PM arrival DEN
Cabin: Upgraded first class
Seat: 02D
Fare Basis Code: SE143ON4
Booking class: NF
Fare Rules

Normally, there is another line under "Flight:confirmed" that says "upgrade: confirmed" but it doesn't say a thing. There is a seat assigned to me and the cabin says Upgrade first class but the upgrade status doesn't show...something smells fishy???? Am I confirmed??