Node.js 13 has been released with upgrades to V8 and new features including diagnostic reporting. Node.js 12 was moved to long term support at the same time.
The main additions to the new release are the enabling by default of full International Components for Unicode (ICU), and a stable version of the Workers API. ICU was already supported in earlier releases so that you can write code that can support users in multiple languages and locales. Until this version, only English was enabled by default so you had to get and enable support for any other languages you wanted to target.
Alongside the new features, for those contributing to Node.js this release works better with Python 3 for building Node.js.
Systems that have Python 2 and Python 3 installed will still use Python 2, but systems with only Python 3 should now be able to build using Python 3.