Virtual console will not be on the Switch at launch, but Hamster Corporation will be bringing retro games to the system this March. To Be specific, the Neo Geo will see its games come to the system. King of Fighters ’98, Metal Slug 3, Waku Waku 7, Shock Troopers and World Heroes Perfect, are currently confirmed for the Switch as digital titles coming this March.
These are only confirmed for Japan right now, but Arcade Archives is confirmed for North America and Europe so we should be hearing soon when these games are coming.