This is vagrant-rackspace's current release process, documented so people know what is currently done.
- Update the version in "lib/vagrant-rackspace/version.rb"
- Update the version in CHANGELOG.md
- Use "rake release". This will make sure to tag that commit and push it RubyGems.
- Create new github release
- Update the version again in both files to a dev version for working again.
The CHANGELOG.md should be maintained in a similar format to Vagrant:
https://github.com/mitchellh/vagrant/blob/master/CHANGELOG.md