manifest for balenalib/raspberrypi3-ubuntu-node:latest-focal not found

I can see from docs and the balena base images repository on github that there are images for ubuntu focal with node. I have installed the latest cli version but still getting this message when trying to build from the latest ubuntu node image. Does anybody know how I can install using an image with ubuntu focal and the latest node version on a raspberry pi 3?

Hi,

Just want to let you know that the balenalib/raspberrypi3-ubuntu-node:latest-focal base image is available. Please let us know if you need further support.