Nintendo UK announced today that a demo for WarioWare Gold has released on the European Nintendo 3DS eShop.
Furthermore, an English version of the recent Japanese trailer was revealed as well:
“I would try my demo…now!”
— Nintendo UK (@NintendoUK) July 5, 2018
WarioWare Gold releases for Nintendo 3DS in Europe on July 27, 2018, Japan on August 2, and North America on August 3.