The August 1 deadline for 64-bit support for new apps (updated apps have a year to implement).
The August 1 deadline to support Android SDK 28/Android 9/Pie (updated apps have to be using them by November 1, 2019)
and
However, you do not have to rush and update your existing apps by August 1 and you can continue to update them with a 32-bit version of Corona until August 1, 2020.
So what does this mean exactly if we have any existing apps that were uploaded before August 2019? Will they be automatically removed from the store on August 1 2020? Or on November 1 2019?
What’s the very latest date now until we have to replace them with 64 bit versions - November 1 2019 or August 1 2020?
One last question: there are two build files exported by the SDK, .aab and .apk. So we only need to upload the .aab file to the Play Store to serve both , 64 bit and older 32 bit devices? No need to upload the .apk anymore?
You upload either the .aab or the .apk file. .aab will get rid of the “your app isn’t optimized” warning and give your customers a little bit smaller download than the .apk. However there is an issue with some Android 9 devices that are 32-bit processors and Google kinda gets the version wrong. We haven’t come up with a solution to that problem yet, so if you have customers running 32-bit devices with Android 9, sticking with the .apk may be the safe option.