There seem to be some new changes in notifications coming to Android which have already shown up on Google’s support page un “Warning about operating system safety”.
It seems like Android will now check your software when you boot, making sure there isn’t anything wrong or harmful in the OS. These are the warnings:
Yellow: “Your device has loaded a different operating system”
Orange: “Your device software can’t be checked for corruption. Please lock the bootloader.”
Red: “Your device is corrupt. It can’t be trusted and may not work properly.”
We haven’t seen these warning first hand, and chances are nobody has yet since they probably will be included in the next version of Android. But if you do happen to come accross one of these, let us know!