You can automate the creation of Sentry releases using CircleCI by creating a CircleCI configuration file that integrates with Sentry's command line interface. This allows developers to quickly and frequently merge changes into their codebase, unlocking features like identifying suspect commits and applying source maps. To do this, you'll need to create a CircleCI account, link your project's repository, define a config.yml file that includes environment variables for Sentry authentication and a job that runs the Sentry CLI commands to create a new release. You can also use CircleCI's local execute command to test your config file locally and validate YAML syntax errors. Once you've set up your configuration, push a new commit to trigger CircleCI to run your build, view details about the build in the UI, and verify that your Sentry releases are working by checking your project's "Releases" page in Sentry.