Pre-load copies have gone live.
Some Switch owners who have a copy of preinstalled Advance Wars 1+2: Restart Camp The game seems to already be playable on the Nintendo Switch.
Here is an example shared on social media:
Read the full article on nintendolife.com
https://www.nintendolife.com/news/2022/04/advance-wars-1plus2-re-boot-camp-appears-to-be-playable-for-some-switch-owners Advance Wars 1+2: Re-Boot Camp appears to be playable for some Switch owners