I don't see any big announcements this year, as companies won't want to detract from the holiday sales. Only exception might be companies that are not yet present on Switch and reconsider. Still, I don't see Nintendo doing different than focus on games they want to sell over the holidays.
Early next year though...
Well, I don't know what is likely, but I can say what i wish for: Etrian Odyssey/Persona Q (or something similar). Maybe even Persona 5. Borderlands. Monster Hunter 5. Dark Souls (or something similar). Darksiders.