FCC is one bottle neck, but it's not the major one. Once a device is "finished," there's also production ramp-up (component deliveries, manufacturing process, .

FCC is one bottle neck, but it's not the major one. Once a device is "finished," there's also production ramp-up (component deliveries, manufacturing process, ...) and filling the distribution pipelines. Both of these make the FCC approval look fast by comparison. Additionally, there are certain advantages in reporting pre-order sales, building hype, and so on.