When does Pokémon Champions Regulation M-B start?

Regulation Set M-B starts with the Season M-3 reset window on June 17, 2026 around 02:00 UTC.

Are Regulation M-B Pokémon and item rules confirmed?

The M-B timing is known, but final eligible Pokémon, item, and battle-rule details should be checked against the official regulation notice or in-game Check Rules screen.

Regulation

Pokémon Champions Current Regulation Set

Q: What is the current Pokémon Champions regulation set?

Regulation Set M-A remains active until June 17, 2026 at 01:59 UTC. Regulation Set M-B starts with the next reset window.

Quick answer: Regulation M-A remains active until June 17, 2026 at 01:59 UTC. Regulation Set M-B starts with the Season M-3 and mobile launch window around 02:00 UTC.

Last updated: 2026-06-16 Methodology Fan-made reference

Primary useRanked and team planning

Check firstSeason and regulation window

Trust ruleOfficial notices beat estimates

Source trail: official gameplay, rewards, ranked battle, and regulation notices are prioritized for ranked, reward, and legality claims. See the methodology page for source priority and projection rules.

The current Pokémon Champions regulation is Regulation Set M-A. It is scheduled from April 8, 2026 at 02:00 UTC to June 17, 2026 at 01:59 UTC. This means Regulation M-A covers both Season M-1 and Season M-2, even though the ranked season changes on May 13.

The next regulation window starts with Regulation Set M-B on June 17, 2026 around 02:00 UTC. That is also the mobile release date for Pokémon Champions on Android and iOS.

Regulations are different from ranked seasons. A ranked season determines ladder progress, final placement, rank, and rewards. A regulation set controls the battle rules: which Pokémon are eligible, what mechanics are active, and which battle parameters apply. The official gameplay page explains that new Ranked Battle regulations are set every few seasons to change competition rules and eligible Pokémon.

What are the current Regulation Set M-A rules?

Regulation Set M-A is the launch ranked ruleset for Pokémon Champions. The official regulation notice says only eligible Pokémon listed for the regulation may participate. It also confirms that certain Pokémon can Mega Evolve if they are holding a Mega Stone, and Mega Evolution can be used one time per battle.

Regulation M-A quick rules table

Rule area M-A planning note Player impact

Format window April 8 to June 17, 2026 Covers Season M-1 and Season M-2.

Mega Evolution Eligible Pokémon can Mega Evolve with the right Mega Stone. Plan one Mega Evolution per battle.

Team legality Use only Pokémon listed as eligible for the regulation. HOME access does not automatically mean ranked legality.

Next ruleset Regulation Set M-B starts June 17, 2026 around 02:00 UTC. Re-check teams before Season M-3.

When does Regulation M-A end?

Regulation M-A ends on June 17, 2026 at 01:59 UTC. Regulation Set M-B begins with the June 17 reset window, around 02:00 UTC. Secondary references now list M-B from June 17 to September 2, 2026, but exact eligible Pokémon and item rules should still be checked against the in-game official regulation notice before ranked play.

When does Regulation M-B start?

Regulation Set M-B starts on June 17, 2026 around 02:00 UTC, alongside Season M-3 and the Android/iOS launch. Use that date for teambuilding planning, but verify the official M-B rules page or in-game Check Rules screen before locking final teams.

How to use regulation dates

Use regulation dates for teambuilding and eligibility checks. Use season dates for ranked ladder deadlines, Battle Pass progress, and rewards. If your team is legal under Regulation M-A, it remains relevant across the known M-A window unless an official notice changes the eligible roster or battle mechanics.

M-A vs M-B regulation timeline

Confirmed Regulation Set M-A: April 8 to June 17, 2026

M-A is the active ruleset until the Season M-2 deadline. Use it for ladder games, reward pushes, and team legality checks before the reset.

Confirmed timing Season M-3 reset: June 17, 2026 around 02:00 UTC

The season reset, mobile launch, and next regulation window all point to the same player-planning date.

Pending rules Regulation Set M-B details

Secondary references list the M-B window, but exact eligible Pokémon, Mega Stone availability, item restrictions, and battle parameters should be verified in official/in-game rules.

Regulation legality checklist

Check the active regulation first: M-A is current until the Season M-2 deadline; M-B begins with the next reset window.
Do not assume HOME transfer means ranked legality: a Pokémon can be available to your account and still be blocked by regulation rules.
Confirm Mega Evolution details: M-A allows eligible Pokémon to Mega Evolve with the matching Mega Stone, one time per battle.
Re-check teams after June 17: Season M-3 starts close to the M-B window, so older M-A team notes may become stale.

What changes on June 17?

Area Before reset After reset

Ranked season Season M-2 final push Season M-3 opening window

Ruleset Regulation Set M-A Regulation Set M-B timing begins

Mobile access Switch-only planning for many players Android, iOS, and Switch cross-platform planning

Team decisions Use confirmed M-A legality Verify the in-game M-B eligible list before locking teams

Related guides by intent

Live countdown Regulation M-B planning guide Pokémon HOME transfer guide Season countdown Season M-2 / Season 2 start time Ranked rewards