It doesn't have to be exclusive to the Switch. Resolves YES on announcement, NO once a new 3D Zelda is announced to be exclusive to a different console.
@NcyRocks Based on the trailer footage is your initial impression that Echoes of Wisdom counts as “3D” in the sense you mean? It looks like it’s grid based, with a fixed camera angle, but with the grid being 3-dimensional
@JimHays In short, no.
In long, my first thought was that it was a 2D game, and the comments sections I checked out seemed to agree. I think that if it counts as a 3D game then so do almost all Zelda games. So I don't think it makes sense to call it 3D.
I acknowledge that that makes the 2D-3D distinction something of a misnomer - being grid-based with a fixed camera angle seems to divide them much more neatly.
Yeah, I was mostly unsure based on your claim below that Link’s Awakening is only “arguably” not 3D. EoW looks to be more 3D than that (not only 3D assets and rendering that are baked into the game’s design rather than retrofitted into a 2D game, but also more substantial z-axis movement), however the gameplay seems much closer to historical 2D Zelda examples than historical 3D Zelda examples.
@ForrestTaylor No. Link's Awakening isn't a new game (and is arguably not 3D), and Hyrule Warriors isn't a "Zelda game" in the sense I mean.