Green Exclamation Point in the "Pages" page

One of my pages has a green exclamation point (see image) - can any one tell me what it means - I can’t find any info in the documentation. Screenshot 2020-05-01 at 14.17.55

It means that there’s changes relative to the page base template, so when it’s green, you can publish a new version of your page to the marketplace – though it’s really a bug that it shows that before you’ve first published your page at all. Will look into clarifying that.