This essentially means apps which previously weren’t focused on Android 10 will now be pushed towards taking advantages of the OS’s software and security improvements.
In a post online Google said: “Every new Android version introduces changes that bring significant security and performance improvements as well as enhance the user experience of Android overall.
“Some of these changes only apply to apps that explicitly declare support.
“Configuring your app to target a recent API level ensures that users can benefit from these improvements, while still allowing it to run on older Android versions.
“Targeting a recent API level also allows your app to take advantage of the platform’s latest features to delight your users.
“Furthermore, as of Android 10 (API level 29), users see a warning when starting an app for the first time if the app targets Android 5.1 (API level 22) or lower.”