No? Node.js 15 is "current" - as in it is essentially the "develop branch." If you take a look at the release cycle, 14 will start LTS in a few days, and 16 will start as LTS next year in April. While in LTS they only receive security updates as well as critical bug fixes.
I agree, but for the reason that going to 0.15 from 14 wouldn't make sense. I believe the master, v14.x, and v15.x branches are diverging anyways, each with their own development. They snapshot the master branch at some times into a new branch as the next master version, and do patches on that branch. So multiple branches are concurrently being developed. But the master branch, not v15.x, would be the canonical "develop branch".
In this state, shouldn't it be Node 0.15?