Record Pattern feature is expected to be a standard feature in Java 21, which is an LTS Release. This is build on top of Records, which have been a standard feature for some time and is gaining popularity. Alongwith Record Patterns, Switch Pattern is also expected to be standard. Switch Pattern is a sort of binder for providing Record Pattern. Given this info, it can be safely assumed that Record Pattern feature is going to be widely used with Java 21 version onwards.