The storage application Pokémon HOME received a new update recently which adds a brand new feature known as the Pokémon Guidebook. In addition to this, a new distribution event for a Shiny Meloetta has kicked off.
As highlighted by Serebii.net, the new guidebook feature shows off various forms of Pokémon as well as the games they're in (and related Pokémon media). Along with this is a new Mystery Gift function - allowing users to receive gifts via NFC.
To unlock this Shiny Meloetta, you'll need to have completed the Paldea, Kitakami and Blueberry Academy Pokédexes. According to the source, this is also the first available release of a Shiny Meloetta in the games.
"Serebii Update: A distribution of Shiny Meloetta has begun in Pokémon HOME if you have completed the Paldea, Kitakami and Blueberry Academy Pokédexes"
This Meloetta is level 50, comes with the 'serene grace' ability, and has a modest nature. It comes equipped with the moves Relic Song, Echoed Voice, Psybeam and Sing, and is distributed in a Cherish Ball.