The pretrained models are already available online! Check out the "demo" section of the website. Your browser is fetching the model when you run the demo.
Will the code be released, or an API endpoint? Otherwise it will be impossible for us to use it for anything.. since it's Google I assume it will just end up in a black hole like most of the research.. or five years later some AI researchers leave and finally create a startup.
I hope to release code in the new year, but it'll take a while. The codebase is heavily wired into other not-yet-open-sourced libraries, and it'll take a while to disentangle them.