What do you mean there are other maps?

Dust II - real

Mirage - not real
Inferno - not real
Cache - not real
Overpass - not real
Cobblestone - not real
Nuke - not real
Train - not real
Dust - not real
Vertigo - not real
Office - not real
Aztec - not real
Canals - not real
Assault - not real
Italy - not real
Militia - not real