SITE UPDATES

What changed... and why it matters

Launches, improvements, corrections, and PvP data changes that directly affect what you can do on Oak.

September 2026

New

Site updates now have a home

Oak now keeps a public record of the launches, improvements, corrections, and PvP data changes that affect how you use the site. Use the month and year controls above to find an earlier update.

Affects: Everyone using Oak Coliseum

PvP Data

Twilight Trails league data is live

Oak's active league menus now use the Twilight Trails rankings and matchup releases selected for the current season. League selectors show the active formats without adding season labels to every choice.

Affects: Optimizer, Customizer, Simulation, Training, and What-If Analysis

Improved

Your Pokémon builds now follow one shared rulebook

Oak now carries the same form, status, CP, level, IVs, moves, league, and season information between its major tools. Missing IVs stay unknown, special moves remain distinct, and league eligibility is evaluated consistently.

Affects: Inventory, Optimizer, Customizer, Simulation, and What-If Analysis

Fixed

Mega League recommendations now obey both team limits

We corrected two recommendation errors: Oak could include a Mega or Primal above the selected league's CP limit, and it could place more than one Mega or Primal on the same team. Oak now enforces both rules across every Mega League format. Your saved Inventory was not changed.

What to do: Regenerate any Mega League team created before September 7.

Affects: Optimizer, Customizer, and Simulation

New

Add Pokémon from appraisal screenshots

Inventory can now read one or two Pokémon GO appraisal screenshots on your device. You review the detected Pokémon, CP, IVs, form, status, and moves before anything is saved. The screenshot itself is not uploaded to Oak.

Affects: Inventory and Screenshot Import

Fixed

Mega and Primal build candidates follow the complete evolution path

Training can now recognize when an owned Pokémon can evolve and then Mega Evolve or undergo Primal Reversion for an eligible league. It still rejects Shadow Pokémon, ordinary leagues, and builds that would cross the league's CP limit.

Affects: Training build candidates

August 2026

Improved

Mega, Primal, and event move choices were expanded

Oak filled the complete base move pools for supported Mega Evolutions and Primal Reversions, added newly released Mega forms, and restored missing Community Day moves for Thievul and Oinkologne. Oak now checks its move catalog against current PvPoke battle data each day and sends questionable changes for review instead of removing moves automatically.

Affects: Inventory, Training, and team tools

Improved

Inventory entry choices are easier to scan

Inventory now presents Poke Genie import, Pokebattler import status, and manual entry as three clear choices. Poke Genie and manual entry are available now; Pokebattler remains labeled Coming Soon until that import is supported.

Affects: Inventory

New

What-If Analysis lets you test a build before changing it

Choose a saved Pokémon, try another legal moveset, and compare exact 2–2 shield results against the league's tracked threats. The experiment is read-only and never changes the Pokémon stored in your Inventory.

Affects: Workshop and Inventory

Improved

Inventory now limits forms and moves to compatible choices

The editor now offers catalog-backed forms instead of a free-text field and refreshes the legal move list when the Pokémon, form, or status changes. Existing records with older form labels are resolved without guessing when the evidence is ambiguous.

Affects: Inventory editing

Improved

Large Poke Genie imports are faster and duplicate-safe

Large roster imports now save as one protected operation while league ranks finish separately. Reimporting the same Poke Genie records skips those records without incorrectly merging different Pokémon that happen to share CP, IVs, and moves. Inventory can also be cleared through an intentional confirmation step.

Affects: Inventory CSV import

New

Monthly and annual Premium membership opened

Signed-in users can now choose monthly or annual Premium membership through Stripe-hosted Checkout and manage an active paid subscription from their Oak account.

Affects: Premium and My Account

New

The GO Battle League schedule joined Oak

The public Schedule page shows current and upcoming league rotations, Stardust bonuses, and direct paths into Oak's tools, with links to official and community calendar sources.

Affects: Schedule

Improved

Training now focuses on improvements you can actually make

Training now evaluates eligible Pokémon from your own Inventory, omits builds whose moves already match the recommendation, and explains move changes, second Charged Attack needs, Elite TM requirements, Frustration, and Return without editing your saved Pokémon.

Affects: Training and Inventory

Improved

Team recommendations gained matchup evidence

Optimizer recommendations now use role-aware performance and the tracked meta while maintaining broader species variety across ABC, ABB, and ABA results. Premium analysis shows Win, Close, and Loss outcomes, shared weaknesses, best answers, and type and coverage gaps for the generated teams.

Affects: Optimizer and Premium team analysis

Fixed

Generated teams now enforce Species Clause

Oak no longer recommends two forms or statuses of the same Pokémon on one team. Standard, Shadow, Purified, regional, costume, and other variants now count as the same species when a lineup is built.

Affects: Optimizer team generation