https://answers.netlify.com/t/changes-coming-to-netlify-site-urls-com-to-app/8918/91
Changes coming to Netlify site URLs: .com to .app - #91 by singamnv - Support Guides - Netlify...
May 7, 2020 - Starting April 14, 2020, sites without a custom domain are being moved from site-name.netlify.com to site-name.netlify.app . New websites will also have URLs...