Stretch a phone an inch lengthwise to add a row of icons, is not what I would consider a new design. When your phone looks identical to the previous 2 generations you aren't stretching the limits of creativity or design.
the phone wasn't just stretched. it had an "all-new" metallic body, dumping the previous design's glass back. the phone was made taller, sure, but it was also made thinner and lighter. i mean, an all new accord might not look too drastically different from the previous accord, but it doesn't mean it wasn't all new.