For years, Nintendo has made two different types of "Zelda" games: Home console "Zelda" games, like 2017's "The Legend of Zelda: Breath of the Wild," and portable console "Zelda" games, like 2007's "The Legend of Zelda: Phantom Hourglass."
The home console games are considered the "main" series games, and only come out every five to 10 years. The portable games are considered side stories, and come out slightly more often. They're all important games for Nintendo, of course, but they're comparatively very different approaches to the massively important "Legend of Zelda" franchise.
With the Nintendo Switch, which functions both as a home console and a handheld, the delineation between home console and portable console has ended. Look no further than the recent announcement of "Pokémon Sword" and "Pokémon Shield" for evidence of that fact: The Pokémon series has always been a portable franchise, but no longer.
With "Link's Awakening" coming to the Switch, there's another piece of major evidence that the barrier between home and portable console no longer exists for Nintendo.