Android 12 is the biggest redesign to come to the OS in ages, and it looks like Google isn't content with changing only the visuals. As spotted by 9to5Google, the company has introduced new ringtones and notification sounds that are slated to replace the current tried-and-true sounds as the new defaults for upcoming products, and you can check them out on your Pixel phone running Android 11 (APK Download).
That's the sound you will hear every morning if you're on Android Oreo and you use Do Not Disturb during the night. For some reason, DND and notifications work differently since the latest update to Oreo: when your phone exits DND, it will proceed to play the sound or do the vibration of every notification that was received during the time it was stuck in DND.
We're not sure if this is a bug or an intended behavior, though the latter doesn't make a lot of sense. Previously, when your phone exited DND, whether at a set time or on an alarm, it was happy to just display the notifications so you'd see them when you picked it up.
Oh Android... you have the most modern and complicated of features, yet every once in a while we're reminded of one basic, really really really really basic, feature that you're still missing. Did you know that you can't easily choose a custom ringtone in Android AOSP? I didn't. I have used LG and Samsung phones for years and it's been ages since I tried to change the default ringtone (my phone is always silent anyway), so all I knew was that I could choose a file manually on these phones. AOSP? Not so. Wh---at?!
See, on Android Nougat in AOSP, if you go to change the ringtone, alarm sound, or notification sound, you can pick one of the default options.