Melee's stages were all floating islands as well, with a few exceptions, which Brawl has shown to have as well.
By the looks of things, the only real difference betwen SSBB's stages, and SSBM stages, is that SSBB stages are far more dynamic.
By the looks of things, the only real difference betwen SSBB's stages, and SSBM stages, is that SSBB stages are far more dynamic.