Testing the feature in Android 13 also requires users to enable Developer Options and change a toggle switch in settings. Since the Android 13 test version is a limited test for only certain apps, we would recommend that you hold out for the Android 14 beta program or the stable version of Android 14.
Google’s example of predictive back gesture
When the back gesture is made slowly from the left or right edge of the screen, the page you’re currently viewing starts to shrink revealing what is behind it. By knowing where you are going when the back gesture is made, you can prevent yourself from backing out of an app and closing it accidentally. This was screwing around with the metrics tracked by some Android developers.
The path to Android 14 as published by Google
Next month we should see Google release Android 14 Developer Preview 2. Starting in April and running through July, the Android 14 beta program will be underway culminating with the release of the stable version of Android 14 sometime in August.