If they sell them - fine, but likely they will not seel all of them. If you look right now at then next couple of weeks there will clearly be filled in the end with non-rev(at least partially).
How can you say that 2 1/2 months out? For example, in the next few days:
Nov 16: DL 007 DXB ATL is selling J3 D3 S1 I0
Nov 19: DL 007 DXB ATL is selling J3 D0 S0 I0
All it takes, is 3 people to either make a new reservation or change their existing reservations to those flights above, and the cabin will be sold out. And that is before accomodating any Non-Revs.
FYI, for Jan 26, Jan 27, UA has NO upgrade inventory on their DXB-IAD flights either, with 33 open seats on Jan 26, and 38 seats on Jan 27.