Yes. Each year we release a new updated version of the Judges Course. If you would like to be considered a registered Judge for the current season you will need to complete the current course.
The 2019 Judges Course is only valid through 2019.
*NOTE* The 2019 Judges Course will be valid for the 2020 Open which begins in October of 2019. If you've already completed the 2019 course you're all set and do not need to retake it.