This release contains updates to help and documentation content for ScriptAnalyzer, fixes to the built-in default rule set based on community feedback, support for consuming PowerShell content as streams, improvements in Custom Rule support, Engine error handling and numerous community contributions.
You can grab this version from PowerShell Gallery @:
http://www.powershellgallery.com/packages/PSScriptAnalyzer/1.2.0
Detailed change log is here:
https://github.com/PowerShell/PSScriptAnalyzer/blob/master/CHANGELOG.MD