The Switch still has yet to see a price cut in any region and 2021 was forecast to be the system's strongest year. It also reached
20 million units in Japan recently, making 5th place among high-selling consoles just behind the PS2 (21 million) and the 3DS (25 million). And Switch game softwares sales are ridiculously strong too, even for third-parties that never really had a history with Nintendo before and used to be more part of the PS library, such as Akiba's Trip or EDF. A new hardware revision is unlikely right now
There might be one in the future but like
@Pissmaster said, it's not gonna be something that people have been hyping about like the 4K and OLED meme. It's like they have forgotten the story of the Vita and the proprietary memory cards: a well-built piece of hardware (in its time) sold at loss and gouged by an expensive necessary accessory.