After a long wait (thank you for your patience!), the WDF 1.7 coinstallers are now up on the connect site.  To get the bits

  1. go to http://connect.microsoft.com
  2. Log in using your passport account
  3. Navigate to the WDF page (I don't know where it lives in the connection directory, sigh)
  4. Choose Downloads on the left
  5. The package is dated 4/17/2008, you may be able to get it directly from here once you have logged on

Enjoy and let the signing and shipping of v1.7 WDF drivers begin!