The Play! Pokémon rules and regulations are periodically reviewed to maintain competitive balance in the Championship Series. The scheduled rules review for late 2017 has been completed, and the documents have been updated. Pokémon TCG and video game players and Professors are encouraged to familiarize themselves with the latest rules and regulations ahead of their next competition.
Remember that the Pokémon Video Game Championship Series rules will be updated again toward the end of the year in preparation for the format change to support Pokémon Ultra Sun and Pokémon Ultra Moon, which will happen in January 2018.
We'll continue to follow the events of the season and review the documents at regular intervals. Check back here at Pokemon.com for notices of when documents have been updated.
Have fun, and good luck battling in the 2018 Championship Series season.