https://wccftech.com/nes-nintendo-switch-hd/

Soon enough, Nintendo Switch owners who will subscribe to the Nintendo Switch Online Service will be able to play classic NES games on their console. It was originally revealed that most games will come with new online features, and today we have learned that the enhancements don’t stop here.

Nintendo confirmed that NES games on Switch will come with a slew of additional features, including special save states, HD resolution, and filters. Save states aren’t all that surprising, considering Virtual Console titles released for other Nintendo consoles had them, but it’s still nice to have a confirmation.