I just released Omnibus 2.0.1 (the gem), which includes a number of bug fixes as a result of the 2.0 refactor:
Fix “blank” errors
Fix new Rubocop warnings
Fix the name of the pkg artifact for OSX
Update the project generator files to use the new omnibus gem version
Additionally, this release has switched the underlying build environment for newly generated projects to use Test Kitchen instead of Vagrant directly. This permits a higher abstraction for users to customize and use cloud providers rather than being limited to the Vagrant ecosystem (although vagrant is still the default option). This change does not affect existing omnibus projects.