Day/night mode isn't implemented yet, as we've only just added the weather and time apps. It should be possible in the future though.
The mobile apps will still send you a notification if a sensor is tampered, once we release the updated mobile apps. We've had a couple of irksome bugs that they're working on fixing with the backend related to something with the reporting, so once that's done, the apps will be released.
Scenes will come later, but again, with the updated apps, you'll be able to set home/away notifications from things like motion sensors.
