Node Course updated?

I am thinking of buying the node course. Just wanted to know if its updated?

In the Installation lesson Mosh opens and the latest version shown on that site was 9.2.0, which was released on 14 Nov 2017.

I don’t know if any of the course content has been updated since then, but if not then that makes it about 6 years old, which seems a bit dated to me. That said, his current price for the full course is $19, which might make it worth a try.