The Switch 2 dock may enable the 4K capabilities shared by competing consoles. A popular Famiboards user described a dock using a Realtek DisplayPort to HDMI 2.1 converter. Following surprising reports about dev kits, gamers have more hope that the Switch 2 specs will include a 4K output. https://www.notebookcheck.net/Nintendo-Switch-2-leak-describing-4K-dock-creates-more-confusion-about-console-s-specs.991291.0.html
Just wait until tomorrow, one day... hopefully we will get some answers!