The Witcher 3: Wild Hunt — Complete Edition for Nintendo Switch will launch digitally and in retail on October 15th, 2019.
https://www.youtube.com/watch?v=MovQWz4biGI&t=2214s
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https://www.youtube.com/watch?v=orbugcTgHEE
https://www.youtube.com/watch?v=QNcHI8mm9gI&t=4s