In order to make the new Switch Lite more portable, Nintendo reduced the screen size to 5.5-inch. Still, the new version comes with an updated Tegra SoC which improves battery life, and it also includes a directional gamepad. The Switch Lite is expected to begin shipping September 20 for US$19.99.
https://www.notebookcheck.net/Nintendo-announces-Switch-Lite-handheld-console-with-updated-Nvidia-Tegra-SoC.427220.0.html