the Indian iOS store is now featuring an official advertisement for Pokémon GO that says the following:
“Special Pikachu with Hat and first legendary Pokémon.”
It’s unclear when this ad went up, but it’s a new image that was not reported before. We could be seeing a similar ad appearing in other stores soon. As far as speculation goes, we expect that Mew could be the “first Legendary Pokémon” mentioned in the ad.
The screenshot below shows the ad (center right portion of the image):