wp-calypso/desktop/desktop-config/config-release.json

{
	"build": "release",
	"updater": {
		"downloadUrl": "https://apps.wordpress.com/desktop/",
		"apiUrl": "https://api.github.com/repos/Automattic/wp-desktop/releases",
		"delay": 2000,
		"interval": 43200000
	}
}