New versions of videogames consoles are facts nowadays. Since the launch of the first PlayStation we've seen how most of the companies related to videoagaming make reviews on gadgets and improve features on their consoles. Such as the cases of Xbox with the S version and Sony with the PS4 Slim, so now Switch is on.
According to rumors, the new Switch will feature a re-edition, improving the worst aspect of portable, its screen. This would be a new gen portable and go on sales by 2019.
Others improvements reportedly to be are the optimization of the Switch's energy, lighter but mantaining the same technicals characteristics. This means a Nintendo Switch Slim with a better system.
This are just rumors, let's hope Nintendo confirm the new.