The official Pokémon website has announced a new game for the Nintendo DS called Pokémon Conquest. The game is called Pokémon + Nobunaga's Ambition (ポケモン＋ノブナガの野望) in Japan and it was just released last month in Japan. Pokémon Conquest will be released in North America on June 18th, 2012. Below is the news post from the official website.

Official Website News Post

Warlords and their Pokémon clash in Pokémon Conquest, a new game for the Nintendo DS™ family of systems!

In this unique turn-based strategy game, play as a Warlord and build a bond with your Pokémon in order to become more powerful and intimidate your foes! Battle other Warriors and Warlords—and their Pokémon—to conquer all before you and unite the vast Ransei region!

With a nod to the classic game NOBUNAGA'S AMBITION, Pokémon Conquest takes Pokémon video games to an all-new level!

Get ready to clash in Pokémon Conquest, coming soon for the Nintendo DS family of systems! The game can also be played in 2D on the Nintendo 3DS™ system.

Source: http://www.pokemon.com/pokemon-video-games/pokemon-conquest/

Pokémon Conquest Trailer

Press Release

REDMOND, Wash., Apr 04, 2012 -- A creative new entry in the Pokémon family of video games delivers a new way for fans to enjoy this legendary series on the Nintendo DS family of systems. Pokémon Conquest, set to launch on June 18, offers a fun new way to play Pokémon in a unique world called Ransei that is filled with adventure. Developed by TECMO KOEI GAMES Co., Ltd., the 2D game can also be played on the Nintendo 3DS system.

In Pokémon Conquest, players take on the role of a young Warlord who is linked with a Pokémon. Together, they must set out to recruit Warrior allies to strengthen their growing kingdom. Along their journey, players will encounter a variety of Pokémon, as well as Warriors and Warlords inspired by the Japanese feudal era. The game contains nearly 200 Pokémon, including many from the recent Pokémon Black Version and Pokémon White Version games, which have sold more than 4 million copies combined in the United States.

As the battlefield unfolds in Pokémon Conquest, players must choose the correct Pokémon type to inflict maximum damage on their opponents. In the turn-based skirmishes, players choose different tactics for intense six-on-six battles, and battle conditions can change on every turn, keeping players on their toes in anticipation of what will happen next.

“Pokémon fans are always interested in playing in new environments and experiencing new adventures,” said Scott Moffitt, Nintendo of America’s executive vice president of Sales & Marketing. “Pokémon Conquest gives them an entirely new way to enjoy this beloved series, with exciting new settings, fierce battles and nearly 200 Pokémon to team up with.”