Datadog has introduced new features for template variables in their dashboards, making it easier to create and manage dynamic, shareable dashboards. The new template variable modal allows users to select tags or attributes for variables, automatically filling in the variable name with the tag key. Users can also set default values and drag variables to reorder them, making the variable set easier to parse. Additionally, Datadog now offers an available values field, which enables users to focus on relevant values and filter out noise, such as unsupported browsers or deprecated services. These new features aim to optimize the template variable workflow, allowing users to easily visualize and monitor the data they need.