Nintendo has just put out a small system software update for the Switch. Patch notes for firmware version 13.1.0 explain that this update is meant to add support for the new Nintendo Switch Online Expansion Pass, which once updated, allows access to Nintendo 64 and Sega Genesis games. If you're interested in keeping your Switch compatible with CFW, it's best to wait for the all-clear from a reliable developer before updating, as always.
Ver. 13.1.0 (Released October 25, 2021)
- Added support for Nintendo Switch Online + Expansion Pack.
- General system stability improvements to enhance the user's experience.