So, reading up on roon vālence, is says it is an AI that looks at their database, your library, and your listening history,
You can read more here:
“Vālence lets Roon show you new releases you care about, based on your library and listening history. The more you use Roon, the better the “New Releases” will get! You can also favorite the artists you love to ensure you never miss their latest.”