Marco Russo and Alberto Ferrari show off something new:
A calculated column is computed when the table is refreshed and stored in the model (in Import mode), just like any other column, so its value does not depend on the user who is connected. The introduction of user-aware calculated columns in Power BI changes this picture because we can define a calculated column that is evaluated at query time and depends on the user running the query. This behavior can be obtained by setting the Expression Context property of a calculated column to User Context.
Click through to see the benefit of this new functionality.