Customers awaiting the 747-400 will be pleased to know that it is now compatible with Prepar3D v3 and v4.
Both versions are carried within a single installer and activated using a single license key. No additional purchase is necessary, simply log into your PMDG eCommerce account and navigate to your order history. Re-download the PMDG 747-400 Queen of the Skies II installer from your account, uninstall any previous version you have installed, and install from the new installer.
It is as easy as that!