Windows Servicing Model

John_Dahl how are you rolling out feature updates? If you really need to install a driver during the feature update, you can use setup's /InstallDrivers command line option. Point it to a local path or UNC, and setup will go through the folders, look for the INF, and install the driver(s). It also works with setupconfig.ini.

That said, consider a general workflow to keep drivers current separate, before running setup. For the source OS, this will increase the likelihood that you don’t hit a setup block due to a driver. You can use the same workflow on the new OS, perhaps very soon after setup completes.