Not sure which preorder pack gives you Schlatfeld Stuttgart but Im sure it was a German one. Havent come across anybody online with it yet though but its definately out there.
Not sure if you have this one;-
http://files.ea.com/downloads/eagame...reOrderMap.exe
There are the 5 maps with the Kane Edition, plus 5 preorder maps;-
Top Gun
Blacks Big Battle (2player)
Blacks Bigger Battle (6player)
Death Valley
Schlatfeld Stuttgart