[rjmorris]

> I can say from experience that it doesn't.

No, I don't think you can say that. If you're getting daily notifications about being out of date, then you clearly haven't gotten the update yet. There are two possibilities: (1) You have rebooted. In this case, the dev option must have worked, because you rebooted and didn't get the update, exactly what the dev option promised. (2) You haven't rebooted. In this case, the dev option doesn't apply, because it specifically refers to what happens after you reboot.