Based on other third-party sites posting news- this info might be valuable to some others
"Apple Sport Watch models technically do come with two bands, but in practice, it?s not two full bands, but rather three pieces. There?s one piece that attaches to one end of the watch with the fastener, and then two additional bands (the side with the holes) that attach to the other side of the watch. These two bands come in two different lengths ? a S/M size for smaller wrists and an M/L size for larger wrists. In other words, you won?t have an entire extra band to swap."
"Apple Sport Watch models technically do come with two bands, but in practice, it?s not two full bands, but rather three pieces. There?s one piece that attaches to one end of the watch with the fastener, and then two additional bands (the side with the holes) that attach to the other side of the watch. These two bands come in two different lengths ? a S/M size for smaller wrists and an M/L size for larger wrists. In other words, you won?t have an entire extra band to swap."