Hey we are so happy to have partnered with the amazing Joe Dart from Vulfpeck. Go to Vulfpeck its the only place they will be available from. It will sell out today for sure. If you want one jump on it.
Personally never understood a volume knob on a passive bass unless they were there to control blending of different pickups. Find a tone knob more useful. I keep a single volume knob maxed and use fingers to control louder or softer.
My guess is it will depend how well it sells in the next month. They may continue it if it is a big seller. The original release of the Old Smoothie 40th was only for that year. But they continued the model the next year. Probably because it sold so well, and must still be selling well since it is still in the lineup.