PowerShell 7.0 is the latest major update to the open-source automation tool and configuration framework. It’s a cross-platform (Windows, Linux, and macOS) automation tool for dealing with structured data (e.g. CSV, CSV, XML, etc.), REST APIs, and object models. With the latest release, we’re introducing a number of new features, including new operators: Ternary operator: a? b : c Pipeline chain operators: && and && Null coalescing operators:?? and??=.”]
Source: https://devblogs.microsoft.com/powershell/announcing-powershell-7-0/