This is the first time I've paid attention to it, but Nectarine, Blue Horizon and Lavender Gray are marked as new right now. Looking at the chart available on here, it looks like Red, Hermes Orange, Midnight Blue, Pink Sand, Black, and White and Nike Anthracite/Black, Black/Volt are pretty constant. It seems like new bands came out Spring/Fall for 2015/2016 then all four seasons in 2017 and all seasons so far this year. Are new bands released without fanfare or how the new hardware events do it with the online Apple Store shutting down? Some bands seem to last only one season (small sales?) while other last 2, 3, 4, 5+. Dang it, I was gonna get Pure Platinum/White from Nike but it sold out in the last week. PP/Black looks possibly better tho.