From android developer website, https://developer.android.com/distribute/best-practices/develop/64-bit it is clear that starting August 1, 2019, apps published on Google Play will need to support 64-bit architectures.
Our current app has native libraries for armeabi-v7a, arm64-v8a, x86 ABIs but no x86-64. This is because one of the cordova plugins we are using doesn't provide X86-64 support.
Will playstore reject the app update or pass it considering there is arm64-v8a support or we will have to drop support for x86 to stay compliant?
tl;dr
Unity Technologies' User ScottF (1) confirmed with Google representatives:
I've personally dropped the support today for x86 in Google Play Store for an Android App built with Unity. I've just got a warning that I will lose support from 2 devices from a total a 10867 previously supported.
Some extra info:
Source:
1 - https://blogs.unity3d.com/2019/03/05/android-support-update-64-bit-and-app-bundles-backported-to-2017-4-lts/
2 - https://forum.unity.com/threads/wheres-the-unity-stats-page-gone.514106/
3 - https://forum.unity.com/threads/android-x86_64-support.711869/