No, as we don't use Google Play in our project and because Google doesn't actually allow preinstalling it. But I saw a couple of tutorials here how to install it.
Maybe some details about root: as I said we have su binary and the Superuser app preinstalled. But we are also working on integrating root permissions directly into the Android framework. This means you don't need "su -c" anymore to execute privileged commands. You can just do it straight from your Java or native code. Latter is used in our setup to initialize WiringPi and control GPIO pins without shell and without touching "/sys/class/gpio/" files.