The edition date is the month and year editorial finalized the publication. The date is at the end of each title on the Checkpoint Tools tree, such as (1/22). You can compare the edition you have to the Checkpoint Tools release schedule to make sure you have the most current edition installed.
Once editorial finalizes the title, we need more time to program and test it before we can deliver it to you. Therefore edition dates may be a month or two before the Checkpoint Tools release date.