We now support configuring your environment variables to apply a value to groups of branches with a given prefix. Explore the new functionality in Site configuration > Environment variables. When adding a branch value for your environment variable, add a wildcard at the end to apply the value to all branches beginning with the prefix. For example setting the branch name to release/* will apply the supplied value to branches named release/1.2, release/alpha-0.0.1, and so on.

Combine with the ability to configure your site to deploy branches matching selected prefixes to super-charge your branch workflows!