Every year, they do three knives in this special color, and when they sell out, that's it. Also, from 2015, to 2020 the three knives in question were the Pioneer, Cadet, and Classic. Then in 2021, they switched it up, and the three became the Pioneer X*, the Hunter Pro, and the Classic. It appears that 2023 will continue that. I can tell you that earlier years have become very sought after, so as a SAK collector, I always make it a point to get at least one or two as some years sell out faster than others. As bright as this color is, I expect these won't be around for too long. The total run numbers are generally around 15,000 of each (spread across the world), except for the first year's 2015 knives where around 9,500 were made, which is why they so absurdly priced on those rare occasions you actually see one pop up on Ebay or here.
I will be grabbing the Pioneer X and the Hunter Pro as soon as they hit the dealers.
* A Pioneer with scissors.