2K revealed BioShock Infinite: The Complete Edition, XCOM 2 Collection, and Borderlands Legendary Collection for Switch today, and they're seeing retail releases. There will indeed be game cards, but each one is going to require some sort of download. Check out full details on what will need to be downloaded below.
The physical game contains an 16GB cartridge including the opening acts of BioShock Remastered, BioShock 2 Remastered, and BioShock Infinite: The Complete Edition. Later game contents and add-ons will need to be downloaded.
The XCOM 2 Collection physical game contains an 8GB cartridge that features two base game missions. A download is required for the rest of the Total download size will not exceed 24GB.
The physical game contains an 8GB cartridge that features Borderlands: Game of the Year Edition, with a 6.6GB download required. For Borderlands 2 and Borderlands: The Pre-Sequel a 35GB download is required