That's great news. It (probably) means that thew game was a success, and that we are getting another one at some point.
Given that the game will soon release on Steam and that games in general have good legs on Switch, I think this has a chance to reach 2 million units sold at some point.
My (locked) thread about how difficulty should be a decision for the developers, not the gamers.
https://gamrconnect.vgchartz.com/thread.php?id=241866&page=1