Google announced this January that starting Aug 1, 2019 apps will need to have 64-bit version to show up in the store.
https://android-developers.googleblog.c ... 4-bit.html

Does Noesis support 64-bit under Unity? (I'm on the LTS Unity version and only building 32 bit for now)

If not, what are the plans to support it?

Yes, Android arm64 is supported internally. Right now we are only distributing arm and x86 but we will include that platform also. Thanks!

Thanks for the info!

I can confirm that support for Android arm64 in Unity is targeted for our next commercial release (Vuforia Engine SDK 8.1). Currently, this release spanish dictionary is scheduled for mid-March 2019.

Beta released today includes ARM64 for Android on Unity.