https://www.gamespot.com/articles/pokemon-go-features-8-bit-graphics-for-april-fools/1100-6457845/

Pokemon Go's latest update might make you a little nostalgic. Instead of its typical 3D models, each Pokemon in your Pokedex has taken on a rather familiar 8-bit appearance.

"Experience Pokémon GO like never before with cutting-edge 8-BIT GRAPHICS," a post on the Pokemon Go website reads. "Registering approximately twice the definition of 4K, the chunky squares of each pixel provide realistic detail and unbelievable definition. Your Pokédex will feel lifelike in ways previously unimagined on any handheld device ever created."