One of the best places to see new vulnerabilities that are added coverage-wise is if you login to InsightVM and go to Help > Content Updates. This will list new and updated vulnerabilities from the past week.
You can also setup notifications that will automatically send you an email or text based on whatever vulnerability and asset criteria you want to define. If you go to Automation from the left-hand InsightVM menu, you can click “+ New Automation”, then select the Notification type. In here, you can define what types of assets and vulnerabilities you want to be notified of when they’re detected in your environment. Then you can list any email addresses or phone numbers you want to receive the notification, and you’re all set.
Not sure if that’s 100% what you were looking for, but hopefully that helps.