Release notes for the Bolt 0.x release series.
Version 0.21.3 released July 2018.
Bolt is in development
Puppet Bolt is in a pre-1.0 release. This means, per the Semantic Versioning guidelines, that Bolt is still in development and is subject to frequent change, ongoing feature iteration, and improvements. You should expect to upgrade frequently and read the release notes for each version. For more information about semantic versioning guidelines, see the Semantic Versioning specifications.