According to press reports, the Android 15 update adds a surprising new feature called "Notification cooldown" This feature gradually lowers the volume of a series of notifications for a certain amount of time

The notification cooldown option is located at the bottom of the notification settings section and allows you to apply cooldown to all notifications, to specific conversations, or not at all A simple feature to add, but one that may be very popular with those who are inundated with notifications but cannot risk putting their phones on silent mode

It should be noted, however, that this feature does not completely mute the sound of new notifications, nor does it prevent them from popping up on the screen Instead, this feature works by lowering the volume of successive notifications The theory is that this change in volume will allow the user to recognize where a particular notification is coming from and consciously ignore long-lasting conversations

Additionally, there is an unknown cooldown timer that resets after a while When this reset occurs, notifications, whether from the same app or conversation, will arrive at full volume There does not yet appear to be an option for users to adjust this timer, but this may be a feature that will be added in a full update

Thanks to informant Mishaal Rahman, we were able to learn about some of the other additional features offered in the Android 15 Developer Preview These include the addition of a new "keyboard vibration" toggle, as well as tactile feedback when adjusting brightness with the Quick Settings slider, which is enabled by default

Many of these features were already present in some form in previous updates, but the biggest change seems to be that many of them are now enabled by default It is unlikely that more features will be revealed, at least until Google I/O in May

Features like Notification Cooldown seem like fairly minor additions, the kind that could easily become a staple of OS changes But they need some tweaks to make them perfect, and we'll see them and be able to test them ourselves when Android 15 is released, probably later this year