Substantial information regarding Pokemon TCG Pocket's forthcoming A4a expansion has unexpectedly emerged online through an apparent publishing error. The leak not only confirms the set's launch date of August 28 but also unveils several featured Pokemon that will headline this new collection.

Speculation about the A4a supplemental booster packs had been circulating within the community even before the Wisdom of Sea and Sky expansion debuted. Initial theories suggested the set would primarily showcase baby Pokemon, but with those creatures already incorporated into previous releases and Mega Evolution anticipated for autumn, the actual contents have sparked curiosity among dedicated players.

Comprehensive List of Leaked Pokemon in A4a Expansion

• Entei
• Raikou
• Suicune
• Latios
• Latias
• Poliwhirl

The leak originated when Pokemon TCG Pocket apparently accidentally published event information on both Google Play and Apple App Store platforms. This premature announcement indicated that the next in-game event would commence on August 28, introducing the legendary beast trio of Entei, Raikou, and Suicune. The promotional artwork additionally featured Poliwhirl, suggesting this water-type Pokemon might receive a redesigned card in the upcoming expansion.

This incident marks the second time premature information has revealed upcoming content. In July, the complete teaser for Pokemon TCG Pocket's A4 pack was mistakenly published, resulting in 14 cards being revealed ahead of schedule.

Analysis of the leaked characters and the game's overall roster indicates that developer DeNA isn't limiting themed collections to specific regions. While the A4 set was marketed as a journey through Johto, the potential inclusion of Latios and Latias in A4a suggests a transition to Hoenn region Pokemon. This approach likely helps maintain meta-game balance while providing the design team creative flexibility to experiment with diverse creatures and card effects.

Dedicated players anticipating the next miniset should circle August 28 on their calendars. An official teaser trailer for the booster packs is expected to debut shortly, as the recent leak appears to have been content intended for release after the trailer's publication. Following A4a, the game is scheduled to introduce A4b sometime in September, which is projected to conclude the A series. If rumors prove accurate, the game's first anniversary will also herald the arrival of the initial B-series booster packs, potentially signaling a new chapter in the game's evolving meta.

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