WDF drivers using the WDF co-installers are expected to be packaged with the RTM fre versions of the coinstallers. With the logopoint requirement DEVFUND0039, WDF v1.9 co-installers weren’t allowed to be used on downlevel OS’es until the RTM bits are released. As 1.9 RTM co-installers have been released, they can be used for downlevel logo submissions. WDF v1.9 RTM co-installers is available with WDK 7.0.0, which can be downloaded from Microsoft Connect.  However Verify Coinstaller Version Tests of WLK would still fail on downlevel OS’es for 1.9 RTM co-installers unless the latest errata filters are applied on the DTM controller.  You can download the latest filters from winqual.microsoft.com, under the name “WLK Update Filters”.  

Below table describes expected WDF co-installer usage for Win7 RTM timeline;

We have the below announcement on Connect which informs about the WDF v1.9 co-installer usage for Windows 7 Logo;

WDF Logo Reminder – update your driver packages to use the WDF 1.9 RTM Coinstaller

WDF v1.9 drivers are expected to use RTM fre version of 1.9 Co-installers in case they are packaged with the WDF co-installer. Drivers are no longer allowed to get a logo using pre-RTM WDF v1.9 Coinstallers on Windows 7. WDK 7.0.0 can be downloaded from connect side for the WDF v1.9 RTM coinstaller redistributables. There’s no update for downlevel OSs, as logo isn’t distributed for drivers packaged with WDF v1.9 pre-RTM WDF Coinstallers.