How long do you think Nintendo will support Switch?

[Shtinamin_]

The_Liquid_Laser said:

Expect Switch games to be mentioned in Nintendo Directs in both 2025 and 2026 at a minimum. 

They may support it even longer than that though, depending on how they plan to market Nintendo Online.  One strategy would be to gradually use bundles and price cuts for the Switch to get more people to sign up for Nintendo Online.  That would make it easier for people to sign up for this subscription service.  Not sure if they will take this approach or not though.

At any rate, don't expect the Switch to go away any time soon.  Successful consoles hardly ever go away quickly.  Sony tried to kill the PS4 in 2020 and yet new PS4s are still being manufactured and sold.  The Switch will be even harder to kill than the PS4, and that is assuming Nintendo wants to end it's life prematurely (which they probably don't).

↓ They do, they said they want to end it in March 31 2025.

Shtinamin_ said:

Nintendo has already stated how long they will support the Nintendo Switch for.
President Shuntaro Furuwaka stated that we are "still working on software for the Switch for the fiscal year ending March 31, 2025"
March 31, 2025 will be the last day any Nintendo published games will be released on the Switch.

Nintendo Online Support, online multiplayer support, eShop support, and Hardware manufacturing are a different thing.
I think that the successor will have all of these but specifically declare the Switch support for these will be discontinued respectively in April 1, 2030; April 1 2030; April 1, 2029 & April 1, 2027.
3DS eShop closed 12 years after its release and online services close 13 years after its release.
Furuwaka stated that the Switch was at its halfway point in its lifecycle by its 5th year, which is 10 years of shelf life.