Whale of a question...

[skoker]

http://www.airliners.net/photo/Airbus-I ... 1970845/L/

But who is the blocked out order? 

[Mitch.]

If I'm not mistaken, that blocked out spot was the leasing company ILFC, who have sinced cancelled their order for the A380.

http://www.airliners.net/aviation-forums/general_aviation/read.main/5086535

http://australianaviation.com.au/2011/03/ilfc-cancels-a380-order-opts-for-a320neo/

Here's a photo before they cancelled:

http://www.airliners.net/photo/Airbus-Industrie/Airbus-A380-861/1748636/L/

[C]

ILFC would make sense. I doubt they could be quite sure of their business model working with such a specialist aircraft post the 2008 drop in the market.

[Mitch.]

It seems the same question was posed over at Airliners.net

Hope this clears things up.