See https://github.com/nodejs/release for chart of each major version and upcoming versions.
Production should run on the latest Active LTS version.
Dev and Test environments should run on the Current version.
Note that dependencies for the hyper stack will also need to upgrade as Maintenance support ends for older releases.
New major versions are released every 6 months.
Even-numbered major releases are covered by Long Term Support (LTS)
There are no more than 2 active LTS releases at a time.
See https://github.com/nodejs/release for chart of each major version and upcoming versions. Production should run on the latest Active LTS version. Dev and Test environments should run on the Current version. Note that dependencies for the hyper stack will also need to upgrade as Maintenance support ends for older releases.