Even if it's true itll use the exact same joycon and have the exact same size as the original system. Itll just have less bezeling to add in the extra .8 inch of screen.

The system "outputing to 4k" means it will properly output to 4k TVs, which is a software thing not a hardware one. This will just be an update that hits all the systems.

To clarify its not rendering anything in 4k. It's just going to be adding a 4k setting into the system settings that displays everything scaled up properly to 4k (user interface not being blurry, text scaling properly in size etc).

This will not be increasing graphical fidelity at all.

This is also bullshit so it doesn't matter.