Originally announced by Masuda at a fan event at the Fukuoka Pokemon Center as being a Pikachu with Extremespeed to be distributed at Kyushu Shinkansens (to celebrate the one year anniversary of the full completion of the Kyushu bullet train line) (and one year anniversary of the Fukuoka Pokemon Center moving)... this event has exploded into a MASSIVE "Super-Powerful" Hoenn Pokemon giveaway.
A Pikachu knowing ExtremeSpeed
will be distributed wirelessly on Shinkansens running in Kyushu from March 1st - May 6th.
Hold item: none
Ball: Cherish Ball
Ribbon: Classic Ribbon
Between March 17th and May 6th, a plethora of powerful Pokemon will be distributed by IR at 8 different train stations in Kyushu.
During each time period, you can randomly get one of three Pokemon.
Distribution 1: March 17 - April 1 will be Sceptile, Blaziken, and Swampert.
Distribution 2: April 2 - April 22 will be Milotic, Ludicolo, and Walrein.
Distribution 3: April 23 - May 6 will be Metagross, Salamence, and Gardevoir.
During the same time period, you are able to visit other stations to try again
(meaning there must be unique WC IDs for each station and each distribution period).
If you take the Pokemon you received at a station to the Pokemon Center in Fukuoka, you can receive one of the two main Legendary Pokemon from Hoenn (at level 80).
Groudon will be distributed from March 17 - April 15
Kyogre will be distributed from April 16 - May 6
The Pikachu from the trains can't be used to get these Pokemon, it has to be one of the station Pokemon.
(It'd be nice to source PP.org as well if you are getting the translation of this news from here, from me)