Update: Looks like Torna the Golden Country's physical version is a proper cartridge release after all

[manuel]

RolStoppable said:

 

What has not been 100% confirmed is if the boxed version contains a Switch game card

The Japanese official site is pretty clear about it being a regular game card, as they call it "packaged software" as opposed to download software.

Unless they're extremely misleading this time, it comes on a game card.

https://www.nintendo.co.jp/switch/xeno2newstory/pc/index.html