Checkmk 2.3 is here. With the new release, we are not only introducing a new add-on with Synthetic Monitoring, but we are also adding to Checkmk the ability to test your applications for functionality, performance and availability from the user's perspective. We have summarized all the details for you in the Synthetic Monitoring blog post.
The most important information about the numerous other improvements and new features of the new release can be found in the specific blog articles.