The new feature highlights information about a specific environment with a focus on the most recent release. To get started, users need to configure the release and environment attributes in the SDK. By default, Sentry automatically selects the most production-like environment and overlays details from there. The First Seen and Last Seen attributes reflect the chosen environment, and the frequency chart highlights occurrences from the most recent release in that environment. This makes it easier to monitor errors that are only happening in legacy versions of an application. Additionally, Sentry has added new features such as selecting a default environment via Project Settings, creating conditions that match the 'environment' attribute for rules, and improving tooltips and chart renderings. These updates aim to provide the best possible experience for users and their teams.