With env0's current RBAC granularity, you could manage users or teams, and structure their permissions by associating roles on a given project. Now you will be able to assign those roles to a specific environment, without giving extra permissions to a whole project. This enhancement could give you a better way to depict your organization's needs allowing you to have better permissions granularity.
On the Environment page, you can now find the Access tab.
There you can assign access to either Users or Teams to this specific environment.
You can read more about it here