(IANAL but I do work with digital legal data) — depends on the jurisdiction. Generally the bills that change legal codes are timed to take effect all in the sa

(IANAL but I do work with digital legal data) — depends on the jurisdiction. Generally the bills that change legal codes are timed to take effect all in the same near-future date, and so a new “printing” is issued. How often this happens varies, but can be as little as once a year. In the cases where a law is immediately effected, judges and lawyers are smart and read the news, and services like lexis have alerting. The main legal providers will also “patch” things in themselves in advance of printings, and do change sets and redlines by hand. Oftentimes bills instruct regulatory agencies to do things, which is a process that includes lots of published notice.