yes the new versions you upload DOES NOT override any other bundles you have
it will only OVER RIDE the old file bundle
so if you upload an app or theme with different file bundles for the 9700, 9600, 9500 and then add v1.1 for the 9700 . the 9600 and 9500 versions will remain on sale and at v1.0
if you get me!
there is no need to add all bundles again, just updated or new ones