There is a second airframe that they didnt continue with. However they plan on having that airborne this year sometime
Don't know whether this is accurate, but wikipedia tells me:
By 2000, it had become apparent of the need for additional An-225 capacity, the decision was made in September 2006 to complete the second An-225. The second airframe was scheduled for completion around 2008,
[7] then delayed. By August 2009, the aircraft had not been completed and work had been abandoned.
[1][8]
Not sure what to think of this, does seem like the easier option, but wikipedia has been proven wrong many times!
Also,
Mainframe, that looks like cairns, am I right?
Pyro