Thanks to a tip from a reader, I was able to log into my Japanese eShop account on Switch and take a gander at the listing for Donkey Kong Country: Tropical Freeze -- only to find out that the file size has been posted!
According to the listing the Switch port is 6.6GB, which is roughly half the size of the Wii U original of 11.4GB. Compression ho! Japanese eShop users can pre-load the game now that the size has been posted, and we can only assume that the functionality will make its way across the world over time.
I'm a little nervous about this release, mostly because I don't want to see the reputation of the incredible original tarnished because people are turned off by the $60 pricepoint of the Switch edition.
via destructoid https://www.destructoid.com/donkey-kong-country-tropical-freeze-on-switch-will-be-nearly-half-the-size-of-the-wii-u-version-495656.phtml