The official Japanese Pokémon website has revealed that a Shirona Nendoroid (ねんどろいど　シロナ) will be available for pre-order reservation starting March 7th, 2015 until April 15th, 2015. The 10cm Nendoroid will cost 5000yen. The release builds on the popularity of last years Red Nendoroid which was also released on the Pokémon Center website in the United States.

The Shirona Nendoroid includes:

Shirona figure parts: 2 Face Parts (表情パーツ2個), 5 arm parts (腕パーツ5個), 5 hand parts (手首パーツ5個), and 3 leg parts (脚パーツ3個).
Included Pokémon: Gablias (ガブリアス)
Accessory Items: Monster Ball (モンスターボール)

Source: http://www.pokemon.co.jp/info/2015/02/150220_p01.html