When does Microsoft change the default browser to Edge? I have vague memories of seeing the speed of Edge touted during the Windows 8 to Windows 10 upgrade proc

When does Microsoft change the default browser to Edge? I have vague memories of seeing the speed of Edge touted during the Windows 8 to Windows 10 upgrade process, but I also remember being promoted to change my default browser from Edge after the upgrade, without needing to monkey around in Control Center.