Hey Paul,
Is there some hidden API that I'm missing ?
Yes, it's a hidden API. The reason we don't expose this to the end-user is because (a) the interface to retrieve this info is "quick and dirty" (b) you can hardcode this values into your app, we can't do that for the TurboActivate wizard (or we'd have to make a separate TurboActivate wizard for every version and for every customer).
Will hardcoding those values into your custom wizard be a problem?