The official Japanese Pokémon website has revealed that for the next twelve months, a new Pikachu plush doll will be released for purchase each month at the
Pokémon Centers.
Fresher Pikachu (フレッシャーズピカチュウ) will be the first plushie to be released on Saturday March 21st, 2015 and will cost 1600 yen. The term Fresher means a newly hired career-track company employee. The next Pikachu plushie will be released on April 11th, 2015. To also celebrate the launch, one of three different business cards will be given out to those that visit the Pokémon Center starting March 14th, 2015 until supplies last.
Source:
http://www.pokemon.co.jp/info/2015/03/150306_p03.html