The thing is now available via Mystery Gift in Europe, North America and Australia for Pokemon X, Y, Omega Ruby and Alpha Sapphire - and will continue to be so until July 24th.
Like the other 20th anniversary distributions, it is Level 100 and comes in a Cherish Ball. Its ability is Natural Cure, and it comes with the moves Seed Flare, Substitute, Aromatherapy and Energy Ball. It is also holding a Micle Berry.
And that, as they say, is that. Come get 'em while they're, er... hot?