The lead designer of Donkey Kong Country: Tropical Freeze, Stephen Dupree, has returned to Nintendo-owned Retro Studios after a two year hiatus away from the decorated studio.
The report comes way of VGC, which is widely accepted as a reliable source, especially when the information pertains to the Japanese games industry. It's unclear what project Dupree is returning to work on, but many believe it's to aid in the development of Metroid Prime 4, which is the only announced project at the studio.
There's also plenty of speculation that Dupree has returned to work on a new project. Retro Studios isn't known for being a two-game developer, but given that Dupree was a lead on Donkey Kong Country has many thinking he's returned to work on a new Donkey Kong game, which as of right now, is missing from the Nintendo Switch catalog.
A new Donkey Kong game would be great, but I'm not sure it really enhances the Nintendo Switch catalog.