Template variables in dashboards now allow you to select more than one value for the filter.
When you create a variable, instead of applying the variable to all charts in the dashboard, you can select the charts that should use it. 
And now When you select a chart to use a variable, you no longer need to manually add the filter to the query. Cloud Observability automatically adds the variable’s filter. If you delete a variable, Cloud Observability removes the filter from any charts’ query.
Updated Sep 13, 2023