This is a false flag. Some bug let you get the values using the facet syntax. But [lists] can’t have facets until the PR #4267 is merged.
Yes, just wait for the PR to get merged. There are some reviews to be done.
About the Blog post. I’m not sure why it was announced there, this feature. Maybe it was supposed to mean that in “early future” you’ll be able to do it.
I already asked why it was posted like that. But I think it was a misunderstanding.