The producer of Pokémon Masters Yu Sasaki 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. 61)

Greetings, Trainers.
We’re the producers of Pokémon Masters EX, Yu Sasaki and Tetsuya Iguchi, here with a new message for you. Today, we’ll focus on details about events beginning around the end of April and the new Sync Pairs that will debut.

App Update for Late April

New story content titled Fateful Reunion will be added to the Mysterious Stones Chapter on April 30, 2024! You’ll need to have collected a total of 600 Mysterious Stones to unlock this story’s area. Volo and Rei finally meet face-to-face on Pasio. What will Rei do in response to Volo’s intentions?
We hope you look forward to this story!

In addition, we made improvements that allow you to easily check successful teams when you are unable to win a battle, and also revamped each 5★-Guaranteed Sync Pair Scout found in the General tab of the Ticket Scout menu so that you can scout either ×5 or ×10.

Story Event Good Ol’ Rika Here Is Coming

Rika, a new Trainer from the Paldea region, arrives on Pasio! Rika will star in Story Event Good Ol’ Rika Here beginning on April 25, 2024, and is an Elite Four member who appears in Pokémon Scarlet and Pokémon Violet. We hope you look forward to seeing what kinds of stories await her and her partner Clodsire on Pasio.

Also, by teaming up with Rika & Clodsire from their Poké Fair Scout that will be available at the same time as the event, you’ll be able to invite Rika as a Guest to the Trainer Lodge! Plus, you can get a Clodsire photo frame for the Photo Creator by teaming up with Rika & Clodsire, so we hope you try to add them to your team.

Note: Rika can be invited as a Guest to the Trainer Lodge starting April 30, 2024.

Rika & Clodsire

Rika & Clodsire are a Ground-type Support Sync Pair. Their EX Role is Field. Their Rampant Mud Slap Buddy Move can lower all opponents’ accuracy by two stat ranks and leave them poisoned. It can also create a Ground Zone and increase all allies’ Physical Moves ↑ Next and Special Moves ↑ Next effects by two ranks each!
They can also use their Think Fast! Trainer move to raise all allies’ Attack and Sp. Atk by two stat ranks. Plus, they have a Passive Skill that restores all allies’ HP when Rika & Clodsire get hit by an attack move, and another Passive Skill that lowers one of the following stats of an opponent that attacked them by two stat ranks at random when hit by an attack move: Attack, Defense, Sp. Atk, Sp. Def, or Speed. All of this makes them quite a versatile Sync Pair!


Additionally, we’re planning a special Log-in Bonus where you can enjoy conversations with Rika, as well as a gem special to commemorate her arrival.

Plus, a Special Battle Event in which Rika will assign you Missions to complete will begin on April 26, 2024.
You’ll be able to get many fabulous rewards, such as the exclusive “Passed Rika’s Elite Test” Title. Also, based on the total number of Missions completed by all Trainers, you can earn Artwork of Rika & Clodsire to decorate the Trainer Lodge, so we hope you join the event.

Three Triple Feature Poké Fair Scouts Are Coming

Three different Triple Feature Poké Fair Scouts will begin on April 26, 2024, featuring Sync Pairs such as Skyla (Anniversary 2022) & Tornadus, Palmer & Regigigas, and Gloria (Dojo Uniform) & Urshifu! For each lineup, there will be a regular Triple Feature Poké Fair Scout, as well as a paid-gems-only Triple Feature Poké Fair Scout that comes with a Roll Cake present. Each featured Fair-Exclusive Sync Pair will have an EX Role added, so we hope you look forward to it.

Note: Palmer & Regigigas already have an EX Role.

A Costume Event Is Coming

The sequel to the ongoing Costume Event New Heroes Are Born will start on April 29, 2024. Two figures have appeared before our heroes as villains! You won’t want to miss the exciting conclusion!

High Score Event Water and Fairy Conqueror Is Coming

A High Score Event will begin on May 6, 2024. As we mentioned in a previous message, this High Score Event will have two recommended types. You’ll have a broader range of strategies to try this time, so start training your Water- and Fairy-type Sync Pairs!

Taking into account the difference in battle difficulty based on the available Sync Pairs of the recommended types for this High Score Event, the maximum number of points needed to obtain the featured reward will be changed from 180,000 to 200,000. We plan to make more adjustments to this point total based on the difficulty of future events as well.

Other Events and Updates

Also scheduled are returns of Solo Event Pasio Gold Rush, Daily Battle The Golden Magikarp, and Story Event A Golden Future, as well as the addition of an Ultimate Battle and a new Trainer Files.
We hope you enjoy them!

What to Expect in the Next Message

Our next message is scheduled for late May. In it, we plan to share information about new Sync Pairs and events for June. 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.

Pokémon Masters Producer: Yu Sasaki
Operations Producer: Tetsuya Iguchi

Source: https://pokemonmasters-game.com/en-US/announcements/Other_6030_5W_1