The General Producer of Pokémon Masters Tetsuya Iguchi, posted an open letter about the game on the Pokémon Master's official website. The letter addresses the upcoming changes to the game.

A Message from the Pokémon Masters EX Team (Vol. 69)

Greetings, Trainers.
I’m Tetsuya Iguchi, general producer of Pokémon Masters EX, here with a new message for you. The new year is fast approaching. Today, we’ll tell you about our year-end update.

App Update for Late December

A New Guest Arrives in the Trainer Lodge
Starting December 31, 2024, you’ll be able to invite Lana to the Trainer Lodge as a Guest! To invite Lana, you’ll need to team up with Lana & Araquanid first. You can team up with Lana & Araquanid via various Sync Pair Scouts, so be sure to invite her once you’ve teamed up with them.

Upcoming Events and Rallies

Lance is currently in the Pokémon Center, and just as he suspects, a new event will begin on December 31, 2024 at 7:00 a.m.! Also, the New Year’s Gem Present Rally is scheduled to start on December 31, 2024 at 10:00 p.m.. Players who log in during this Rally have a chance to win up to 60,000 Gems, so we hope you join. Please note that the Rally and event start at different times.

Thanks for an Amazing 2024

Pokémon Masters EX was able to celebrate its five-year anniversary this past year. We’ve made it this far thanks to the support of all you Trainers out there, and for this we’d like to express our deepest gratitude.

We’ll continue to do our best to provide the best possible experience, with new features and improvements next year and beyond as well, so we hope you continue to enjoy your adventures on Pasio.

In our message coming around New Year’s Eve, we’ll share information about an event that starts on December 31, 2024 at 7:00 a.m., as well as what’s planned for the update coming in late January. Here’s to another great year together!

What to Expect in the Next Message

Our next message is scheduled for December 31, 2024. We’re always working hard to deliver updates and improvements that make the world of Pokémon Masters EX as fun as possible. Until next time, thank you for playing Pokémon Masters EX.

General Producer: Tetsuya Iguchi

Source: https://pokemonmasters-game.com/en-US/announcements/Other_6110_5W_1