The official Japanese Pokémon website has announced that the temporary Pokémon Store Outlet (ポケモンストア アウトレット) will reopen from April 11th, 2014 until July 21st, 2014 at the Mitsui Outlet Park, Sapporo, Kitahiroshima, Japan (三井アウトレットパーク 札幌北広島). The outlet sells original Pokémon Center products at outlet prices. The store will be open daily from 10:00 until 20:00.

outlet

The Mitsui Outlet Park outlet store was previously open from December 16th, 2012 until March 3rd, 2013 and was extended to Sunday May 19th, 2013 due to the popularity of the store and to take advantage of Golden Week.

Sources: http://www.pokemon.co.jp/info/2014/03/140328_e01.html and http://www.pokemon.co.jp/info/2012/12/121207_gd02.html