Just in case anyone is interested, here is FedEx's fleet list with future aircraft, including the B777F, and the A300-600. It also includes retirement plans for a good portion of the older DC-10 fleet

(I like the DC-10). They do show replacement DC-10 aircraft on the roster...I wonder if these are the "new" MD-10? (The DC-10, configured like the MD-11 with only a two man crew)
Airbus A300-600 70(1 used order) Entering service: 1 in 2009
Airbus A310-200/300 66 Exiting service: 10 in 2010, 3 in 2011, 3 in 2012
Boeing 727-200 81 Exiting service: 4 in 2009, 8 in 2010, 13 in 2011, 18 in 2012,
13 in 2013, 5 in 2014
Replacement aircraft: Boeing 757-200 Fitted with hush kits
Boeing 757-200 18 (27 used orders) Entering service: 8 in 2009, 10 in 2010, 6 in 2011, 3 in 2012
Replacing Boeing 727-200
Boeing 777 Freighter (30 orders)(15 options) Entry into service: 2010-2019
Entering service: 4 in 2010, 10 in 2011, 1 in 2012
McDonnell Douglas DC-10-10 2 Exiting service: 2 in 2009
McDonnell Douglas DC-10-30 10 Exiting service: 3 in 2009, 6 in 2010, 1 in 2011
McDonnell Douglas MD-10-10 61(2 used orders) Entering service: 2 in 2009
McDonnell Douglas MD-10-30 10(10 used orders) Entering service: 3 in 2009, 6 in 2010, 1 in 2011
Exiting service: 1 in 2012, 2 in 2013, 3 in 2014
McDonnell Douglas MD-11 58(2 used orders) Entering service: 1 in 2009, 1 in 2010
ATR 42-300/320 27 Operated as FedEx Feeder
ATR 72-200 13 Operated as FedEx Feeder
Cessna Caravan 208B 242 Operated as FedEx Feeder
Cessna Caravan 208A 10 Operated as FedEx Feeder
Fokker F-27 4 Operated as FedEx Feeder Exiting service: 4 in 2009