The official Japanese Pokémon website has announced that another Jirachi will be distributed at the Tohoku Pokémon Center from August 1st, 2013 until August 31st, 2013 to celebrate the Tanabata Festival. Players of the Japanese versions of Black, White, Black 2 and White 2 can receive the Jirachi.

press photo

Pokémon Info
pic Level: 50
OT: Tanabata (たなばた)
Held Item: Starf Berry
Ability: Serene Grace
ID: 08013
Ribbon: Souvenir Ribbon
Move 1: Draco Meteor
Move 2: Meteor Mash
Move 3: Wish
Move 4: Follow Me

Source: http://www.pokemon.co.jp/info/2013/06/130628_p04.html