https://www.techradar.com/news/no-switch-20-nintendo-reportedly-focussing-on-peripherals-for-now

In the Nintendo Switch’s second year on the market, Nintendo apparently intends to focus on releasing new console peripherals rather than launching any kind of upgraded or revised hardware.

This information comes from a report in the Wall Street Journal, which states that sources have said Nintendo’s main focus is on better manufacturing and continuing to ship to meet the demand of the current Switch console.