It's just a box with a download code, according to VGP.
If you're wondering how exactly Activision will distribute the retail version of Call of Duty: Modern Warfare 4 on the Switch 2, some new information has surfaced via social media.
This update comes from Video Games Plus. According to the North American physical video game distributor, the Switch 2 version of MW4 will be a "code-in-box" release when it arrives this October. As it's "just a box with a download code inside", VGP says it won't be carrying the product.
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