DAX "IN" Operator
It’s hard to keep a secret nowadays. Although Microsoft has not officially announced it, people have discovered on their own that DAX has a new IN operator. Let me explain why the Power BI team have not made this public yet.
The IntelliSense work has not completed yet so although a DAX expression containing the new syntax will be accepted by the engine, it will be red squiggly underlined in the DAX editor.