The Pokémon UNITE has posted a letter to announce the release of the game on mobile as well as posted patch notes for Version 1.2.1.3. Our Pokémon UNITE Patches page has been updated with the details.

A message from the UNITE team!

Since the release of Pokémon UNITE on Nintendo Switch™, the team has enjoyed reading through all of the experiences our players have had during their adventures on Aeos Island. The topics, the details, the strategies—there’s so much even we’ve learned about our game by listening to the conversations our players have been having. Every piece of feedback has been valuable to us, whether it was constructive criticism or complimentary. We’re proud to have created an experience that has resulted in so much enthusiasm, particularly as we invite a new audience to the world of UNITE with tomorrow’s mobile launch of the game.

For both new and returning players, we’re thrilled to share some of the game updates that tomorrow also brings:

• Full cross-platform play and account linking across mobile devices and Nintendo Switch. Link an account, and play with the same account across both platforms.
• New in-game events in which you can get super item enhancers that can upgrade a held item to grade 30. We’ve also made it easier for all Trainers to get item enhancers.
• New held items to introduce fresh strategies.
• The introduction of Unite squads, allowing Trainers to team up with squadmates.
• A second battle pass, which will feature all-new cosmetic items, including new Holowear with special visual effects.
• The rollout of some limited Spectator Mode features.
• Support for multiple new languages.

We’ll continue to add more playable Pokémon and make balance adjustments to both Pokémon and the maps. Trainers can anticipate new battle passes, themed events, and other compelling content to make Pokémon UNITE even more fun and rewarding. Additionally, we’re developing a new mode of play designed to level the playing field for all Trainers, regardless of their held items’ grades.

We’re dedicated to making every Unite Battle as fun and engaging as possible, and the changes above represent some of the many ways we’re working toward that goal. We look forward to continuing to hear our players’ reception and feedback as we work with all of you toward an experience that all fans can enjoy. Thank you all for your continued support and interest in Pokémon UNITE.

See you on Aeos Island, Trainers.
Hoshino
Producer, Pokémon UNITE

Source: https://unite.pokemon.com/en-us/news/producer-letter/

Pokémon UNITE Game Update 9/22

Pokémon UNITE has been updated to support both Nintendo Switch and mobile devices! You can now enjoy Unite Battles together with friends no matter which platform you play on.

In addition, by linking your account, you can use the same save data for both Nintendo Switch and mobile devices, making it possible to enjoy Pokémon UNITE at home and on the go!

Post-Update Version 1.2.1.3

Update Details
Over Five Million Preregistrations Reached for the Mobile Version Everyone who plays the mobile version of the game will receive Aeos tickets, Unite License: Pikachu, and Festival Style: Pikachu as gifts for reaching this preregistration milestone!
Note: These gifts can be used on the Nintendo Switch version of the game as well by linking your account.

New Battle Pass: Galactic Ghost 094
This new battle pass features space-themed items straight out of a galaxy full of twinkling stars.

New Feature: Unite Squads
Other Updates

• Special mission added to receive the Unite license for Zeraora.
• New event added for held items.
• New Battle Guide feature added to the game.
• New Spectate feature added to the game.
• “Good job!” accolades can now be given during battle.
• New Offline Mode feature added to the Nintendo Switch version.
• Shop updated.
• Bugs fixed.
• Text issues fixed.
• UI adjusted.
• Changes made to some Trainer fashion item designs.

Changes have been made to some Pokémon stats and moves to adjust the balance of Unite Battles.
Absol: Night Slash

• Cooldown reduced.
• Area of effect adjusted.

Absol: Sucker Punch

• Cooldown reduced.
• Duration of unstoppable condition while move is in use increased

Zeraora: Slash

• Number of attacks decreased.
• Damage of each attack increased.

Zeraora: Spark

• Lengthened the time allowed between uses to make the move easier to use.
• The number of attacks in the Wild Charge combo will now increase even if the player performs a basic attack while using Spark.

Zeraora: Wild Charge

• Cooldown reduced.
• Damage taken by the user while this move is in use reduced.

Charizard: Fire Punch

• Target(s) affected by the burn adjusted.

Charizard: Flamethrower

• Movement speed increase strengthened.

Charizard: Fire Blast

• Cooldown reduced.

Charizard: Unite Move (Seismic Slam)

• This move has been changed to the following:
• Has the user grab a Pokémon from the opposing team and slam it onto the ground from the air. For a short time afterward, the user can move freely over obstacles. While this Unite Move is being used, the user’s basic attacks deal increased damage and leave opposing Pokémon burned. In addition, when the user deals damage to an opposing Pokémon, the user recovers HP.
• Unite Move charge rate decreased.
• Fixed a bug affecting the possible timing for ending this move.

Venusaur: Giga Drain

• Damage reduction increased.

Venusaur: Petal Dance

• Damage dealt to opposing Pokémon increased.
• Cooldown reduced.
• Movement speed increase strengthened.

Cinderace: Pyro Ball

• Damage dealt to opposing Pokémon increased.
• Cooldown reduced.

Cinderace: Flame Charge

• Cooldown reduced.

Cinderace: Unite Move (Blazing Bicycle Kick)

• Fixed a bug that occurred when the move fails to activate.

Cinderace: Blaze

• Ability effect timing adjusted.

Talonflame

• Attack increased.

Talonflame: Fly

• Cooldown reduced.
• Aerial movement speed increase strengthened.

Talonflame: Unite Move (Flame Sweep)

• Unite Move charge rate increased.

Garchomp

• Defense and Sp. Def increased.

Garchomp: Rough Skin

• Adjusted the time between instances of this Ability’s effect triggering.

Greninja

• Attack and max HP decreased.

Greninja: Smokescreen

• Fixed a bug causing the Smokescreen+ effect to trigger even before the move is upgraded.

Greninja: Double Team

• Improved the movement of the illusory copies.

Greninja: Water Shuriken

• Fixed a bug affecting the decrease to opposing Pokémon’s movement speed.

Greninja: Unite Move (Waterburst Shuriken)

• Adjusted the move to allow it to trigger more quickly.

Greninja: Torrent

• Attack increase weakened.

Wigglytuff:

• Max-level Sp. Atk decreased.

Wigglytuff: Pound

• Damage dealt to opposing Pokémon decreased.

Wigglytuff: Dazzling Gleam

• Damage dealt to opposing Pokémon decreased.

Wigglytuff: Sing

• Fixed a bug affecting opposing Pokémon put to sleep by this move.

Wigglytuff: Cute Charm

• Adjusted the time between instances of this Ability’s effect triggering.

Cramorant: Boosted Attack

• Damage dealt to opposing Pokémon increased.

Cramorant: Surf

• Damage dealt to opposing Pokémon decreased.

Cramorant: Dive

• Cooldown reduced.

Cramorant: Unite Move (Gatling Gulp Missile)

• Damage dealt to opposing Pokémon decreased.

Lucario: Power-Up Punch

• Damage dealt to opposing Pokémon decreased.

Lucario: Close Combat

• Damage dealt to opposing Pokémon increased.
• Number of attacks increased.

Lucario: Close Combat+

• Fixed a bug affecting this move’s damage.

Alolan Ninetales: Blizzard

• Changed how the move deals damage after the blizzard hits an obstacle.

Alolan Ninetales: Unite Move (Snow Globe)

• Fixed bugs.

Alolan Ninetales: Snow Warning

• Fixed bugs.

Eldegoss: Cotton Guard

• Fixed a bug affecting the HP recovery when the move ends.

Eldegoss: Leaf Tornado

• Improved the move’s effects and adjusted the move to match the feel of the controls.

Gardevoir: Boosted Attack

• Fixed a bug affecting this move’s damage.

Gardevoir: Psyshock+

• Fixed bugs.

Snorlax: Yawn

• Fixed a bug affecting opposing Pokémon put to sleep by this move.

Gengar: Lick

• Fixed a bug that occurred when opposing Pokémon are pulled toward the user.
• Fixed a bug affecting this move’s timing.

Mr. Mime: Barrier

• Adjusted the move so that it when it is upgraded, it refills its reserve uses to the maximum.

Mr. Mime: Guard Swap

• Fixed a bug affecting the swapping of Defense.

Crustle

• Adjusted the Pokémon’s contact area.

Slowbro: Basic Attack

• Fixed a bug causing both basic attacks and boosted attacks to decrease the Sp. Def of opposing Pokémon.

Slowbro: Surf

• Adjusted the area of effect.

Machamp: Unite Move (Barrage Blow)

• Fixed a bug with the shove effect.
• Fixed a bug with the move being used on superjump springboards.

Blastoise: Rapid Spin

• Fixed a bug causing attacks performed while spinning to decrease the movement speed of opposing Pokémon.
• Fixed a bug allowing the user to use either Hydro Pump or Water Spout at the same time as basic attacks while spinning.

Wild Pokémon: Regigigas

• As a balance adjustment, added the following effect when this Pokémon is defeated:
• For a short time, your team’s goal-scoring speed increases and your team’s goals become unblockable.

After maintenance begins, some types of rewards will no longer be available for claiming. Please be aware of the points listed below.

Battle Pass

Any battle pass points from completing Season 1 First Half missions that have not yet been claimed will become unavailable for claiming.

However, reward items for reaching new battle pass levels, as well as battle pass prize boxes, will be sent to you via the game's mail system at a later date.

Events

If a reward's claim period ends during maintenance, that reward will become unavailable for claiming once maintenance begins.
In addition, the stock of items in the following locations will change during maintenance:

• Items available as energy rewards
• Items available for exchange with Holowear tickets in Zirco Trading

Source: https://unite.pokemon.com/en-us/news/pokemon-unite-patch-9-22/