Microsoft has developed a new version of PowerShell ISE called PowerShell ISE Preview.
To install it you must be running Windows PowerShell v.5. That’s the version of PowerShell that ships with Windows 10, if you want to check your version type the following in a PowerShell cmd prompt.
Once done, you can enable PowerShell ISE Preview with the following command (on an internet connected computer)
Install-Module -Name PowerShellISE-preview
when prompted to download the NuGet provider answer Yes
To launch the new ISE you’ll need to allow script execution, so try
as shown below
for more info about PowerShell ISE Prview see the anouncement here