Sandshrew and Sandslash will begin appearing in Pokémon Sleep starting on April 27th, 2026.

New Arrivals: Sandshrew and Sandslash

There have been reports of Pokémon appearing that we haven’t seen around here before—maybe this is thanks to the sleep research you’ve all been conducting! It may be possible to encounter them during sleep research sometime soon.

New Arrivals
• Sandshrew – Ground
• Sandslash – Ground

Newly Arriving Pokémon Details

Appearing Beginning
Apr. 27, 2026, at 3:00 p.m.
Note: Pokémon Incense for the new arrivals can be used starting from the date and time above.

Appearing At
Greengrass Isle, Taupe Hollow, Amber Canyon, and Greengrass Isle (Expert)

Sleep Types
Sandshrew: Slumbering
Sandslash: Slumbering

Source: https://www.pokemonsleep.net/en/news/333838303933353530313930393139363832/