The official Pokémon Battrio website has announced the newest expansion to the game, Pokémon Battrio V (ポケモンバトリオV). There will be a demonstration at the 2011 International Tokyo Toy Show (東京おもちゃショー2011) on June, 18th and 19th but the game will launch during the summer of 2011. A few chips were revealed including a Pikachu, Mijumaru, Pokabu and Tsutarja which indicates that the new expansion will include Pokémon from the 5th Generation. Further details will be revealed closer to the games launch in Japan.
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Source:
http://battrio.com/new/new.shtml