Pokemon Black & White — 12 June, 2010
The latest issue of the Japanese magazine CoroCoro has revealed the details of several new pokemon! The collage below shows them all:

The secondary types for the Black and White legendaries have also been revealed: Reshiram, the white one, appears in Pokemon Black and is Dragon/Fire. Zekrom, the black one, appears in Pokemon White and is Dragon/Electric.
We'll be opening up our new Black and White section soon so stay tuned. In the meantime, here are some of the details for the new pokemon:
Chiramii: Chinchilla Pokémon
, Normal-type. Can have Cute Charm or Technician ability.
Mamepato: Baby Pigeon Pokémon
, Normal/Flying-type. Can have Super Luck ability or brand new ability Pigeon Heart, which prevents the defense stat being reduced.
Munna: Dream Eater Pokémon
, Psychic-type. Can have Forewarn or Synchronize ability.
Shimama: Electrification Pokémon
, Electric-type. Can have Lightningrod or Motor Drive ability.
Hihidaruma: Blaze Pokémon
, Fire-type. Has new ability, Invigorate.
Giaru: Gear Pokémon
, Steel-type. Can have Plus or Minus ability.
Meguroko: Desert Crocodile Pokémon
, Ground/Dark-type. Can have Intimidate or Overconfident ability.
An image of the new Isshu region was also in the magazine:

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