No real pattern although once a knife makes the cover on their webpage they are usually shipping to dealers. Knives sell out within minutes these days when they drop on dealers sites so there is a lot of competition these days. Sign up for email alerts for as many dealers as you can. There is always eBay but the prices are high. They just did a Barlow and not long since a lockback so it will probably be a while before they do another run of either.
Cocobolo Pony Jack will be released monday at 4 pm CST.https://tsaknives.com/shop/ols/categories/great-eastern-cutlery?page=1&sortOption=descend_by_created_at