I'm running a Windows 8 machine. The "Windows Features" window tells my that I'm using PowerShell 2, but the PowerShell environment itself says otherwise, see screenshot below.
Why is the Windows Features window saying I got PowerShell 2.0?
PowerShell v3 is build into Windows 8, you can not add/ remove it.
v2 is different story - it's optional, system will operate normally without it, so you can disable/ enable it. To use it - you need to run