From the iOptron booth I learned that to convert the existing iEQ45 to AZ mode you need to:
Disassemble mount head
Remove glued on altitude scale
-iOptron will provide a scale that attaches with a screw
Remove polar scope
Assemble mount head into iEQ45 AZ base ($128 option)
Load new firmware into 8407 controller and mount
Pix attached shows also dual saddle option.