Pre-Order If You Want to Play the Game ASAP
If you want to play The Witcher 3 for Switch as soon as it's released, you'll want to pre-order a copy.
If you pre-order a digital copy of the game you should be able to pre-load it ahead of its October 15th street date. If that's the case, you'll be able to start playing as soon as it unlocks on release day.
The only place I've been able to find it digitally is through Nintendo's eShop though I expect that to change in the near future as more places put it up for pre-order.
If you pre-order a physical copy of The Witcher 3 you won't get your delivery until the morning, afternoon, or night of October 15th unless Best Buy and/or GameStop keep their doors open late to accommodate customers.
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