Expansion is different that new trains, but unfortunately the INNOVIA 300 monorails appear to be wider and taller than the Mark VI monorails.
Luckily they still make the INNOVIA 200 which I would guess is aimed at certain capcity sized systems probably in the 25K group while the 300 is in the 40K group.
Bombardier Photoshop 200 at the Poly:
Bombardier has one more change for a larger capacity train to compete with Hitachi and that's to raise the floor so all wheels and gear are under the train for an entirely flat floor. This would be one really big high capacity train.
Hitachi Large Monorail:
Hitachi Flat Floor: