The official Japanese Pokémon website has announced the full details for Pikachu's Easter - Sparkling Spring Festival Campaign (ピカピカ春祭りキャンペーン) which will take place from March 18th, 2017 until April 9th, 2017 at the Pokémon Centers and Stores in Japan. As part of the campaign, new cute spring themed goods will be released and there will be battle events for the games as well.

Pokémon Egg Distribution

A Pokémon Egg will be distributed to players of Pokémon Sun and Moon during the campaign. It can hatch into one of six different Pokémon: Goomy, Mareanie, Oranguru, Passimian, Turtonator or Drampa.


Source: http://www.pokemon.co.jp/sp/easter2017/present/

Pikachu's Easter - TCG Promo Card Promotion

From Saturday, April 1st, 2017, those that purchase a Pokémon Card Game Expansion Pack, a Reinforcement Expansion Pack or 5 of more booster packs can receive 1 Pikachu's Easter Pokémon Egg promo card at random as a present. There are 4 different cards to collect: Pikachu, Mareanie, Oranguru and Turtonator.


Source: http://www.pokemon.co.jp/sp/easter2017/card/?sp=contents

PokéFan #52 (ポケモンファン 第52号) - Ad Scan

Scan Source: https://twitter.com/karubiimunomono/status/833484627721334784