JDK/JRE 11.0.12+7-0ubuntu3 ARM64 Debian package has not been released

[Xi Cheng]

hi, it seems that JDK/JRE 11.0.12+7 debian package has been released for
AMD64:
https://packages.ubuntu.com/impish/amd64/openjdk-11-jre-headless/download
but not for ARM64:
https://packages.ubuntu.com/impish/arm64/openjdk-11-jre-headless/download

What is the main reason for this discrepancy and are there any timelines
for releasing the ARM64 distribution?

Thanks. Regards