Last night was the announcement of the new Lunar event. You can read more details here. Shiny Fennekin had been announced as part of the event at the time, however, it was removed from the announcement shortly after. It’s not the first occasion that a shiny was incorrectly announced.
If you read somewhere else that Shiny Fennekin was part of the event’s planning, it is true. It is possible that he won’t make it to the Lunar event at all.
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