Bandai is hosting a lottery giving away shiny Mega Rayquaza kid figures! There will only be 1,000 available. People who live in Japan can enter by mailing in the "Pokemon Kids" tickets on the side of the April 2015 kid figure set and also on Pokemon pan. The send in period for entries is April 6th to June 30th.
More information is located here
Those outside Japan interested in this SMR kid figure should starting patrolling auction sites after June 30th.