Android 12 is currently under developer preview and we are now seeing some visual changes in the update. In the Android 12 Developer Preview 3, the notification panel is getting a cool redesign.
As you can see above, the new design relocates the notification count from the bottom right to the top right. This improves visibility as well as adds up space for text preview. As for the developer preview, this feature might be changed in the future. Overall, we hope to see more visual redesigns in the coming update.