A new Ranked Battles Season has been announced for Pokémon Scarlet and Violet. Read on below to learn more:

Play in Ranked Battles Season 4

Pokémon Scarlet and Pokémon Violet Ranked Battles Season 4 (March 2023)

Take on players from around the world now to climb the leaderboards and earn in-game rewards.
A new season of Pokémon Scarlet and Pokémon Violet Ranked Battles has begun! This is a great time to dive into the action to test your Trainer skills in head-to-head battles with players around the world, move up the global leaderboards, and earn helpful in-game rewards.
Running until Friday, March 31, 2023, at 23:59 UTC, Ranked Battles Season 4 will follow the Regulation B regulation set. Also, Pokémon are allowed to Terastallize during battle.

Eligible Pokémon

Paldea Pokédex No. 001–392, 397, and 398 are eligible to participate.
Certain Pokémon may not be used.

Only Pokémon obtained in Pokémon Scarlet or Pokémon Violet games are eligible.

Eligible Pokémon

Timers

Total Time: 20 minutes
Player Time: 7 minutes
Preview Time: 90 seconds
Turn Time: 45 seconds

Rewards

Before battle, you’ll be matched up with players of similar rank to ensure even competition. The higher the tier you finish in, the greater your in-game rewards after the season concludes.
You must finish at least one match with a win or loss during the season to be eligible for Season 4 rewards.

Master Ball Tier

· Salty Herba Mystica ×3
· Gold Bottle Cap ×1
· Bottle Cap ×3
· Ability Patch ×1
· 100,000 League Points

Ultra Ball Tier

· Salty Herba Mystica ×1
· Gold Bottle Cap ×1
· Bottle Cap ×1
· Ability Capsule ×1
· 60,000 League Points

Great Ball Tier

· TM171 (Tera Blast) ×1
· Bottle Cap ×1
· Ability Capsule ×1
· 30,000 League Points

Poké Ball Tier

· TM171 (Tera Blast) ×1
· 10,000 League Points

Beginner Tier

· 5,000 League Points

What Are Ranked Battles?

Pokémon Scarlet and Pokémon Violet Ranked Battles allow you to test your Trainer skills in head-to-head battles with players around the world. Each Trainer’s skill in battle is tracked by their rank, which changes based on the Trainer’s battle results. Trainers are matched up with other players of similar rank to ensure even competition.

Any Nintendo Switch Online membership (sold separately) and Nintendo Account required for online features. Membership auto-renews after initial term at the then-current price unless canceled. Not available in all countries. Internet access required for online features. Terms apply. Learn more at nintendo.com/switch-online.
Battle data and results will be provided to Nintendo Co., Ltd., and The Pokémon Company (and its subsidiaries).
Players engaging in the following activities may receive penalties and be restricted from participating in future online events.
• Use of unauthorized methods to alter game save data, use of Pokémon that have data altered via altering code, or use of Pokémon created via altering code
• Significantly large number of disconnects during battle, from when your opponent has been decided to when the match results have been fully sent to the server (please ensure a stable connection environment when connecting to the internet)
• Troubling behavior that could affect other participants or make others feel unpleasant
• Actions that would obstruct battles and operations, such as hacking
• Registering with incorrect information or impersonating another player
• Other actions that operation hosts determine to be inappropriate

Source: Pokémon Scarlet and Violet news