I actually found a web site the other night, but can't find it now, that was done my a United Airlines FA, and had a listing of every 777 from the tail number, and delivery dates, and things associated like that. All 4 777's numbers I saw were on his list, that was supposed to be delivered in December, but was pushed back to late January. Interestingly, according to the FA on my flight from DEN-TPA announced quite a few times that starting Feb 1st, UA will be offering NS service from DEN-HNL and back, on, 777's.