Nike likes to keep things fresh. Maybe not so much in shoe models, but at least the colours of the existing shoes change every few months. To be honest, the shoes don't need much changing as they've proven to do a good job for the (team) riders. Look what NIKE has in store for you this upcoming winter. 
After doing a BMX 'zine for ten years (1987 - 1996) FATBMX made it on the internet. The year was 1998. Here to stay.