Mitigating Spectre variant 2 with Retpoline on Windows

I am wondering about Retpoline as well. I'm currently running Windows 10 1809 with March 1, 2019—KB4482887 (OS Build 17763.348) installed.

I then went and installed the latest version of Get-SpeculationControlSettings at https://support.microsoft.com/en-us/help/4074629/understanding-the-output-of-get-speculationcontrolsettings-powershell as per the article here https://techcommunity.microsoft.com/t5/Windows-Kernel-Internals/Mitigating-Spectre-variant-2-with-Retpoline-on-Windows/ba-p/295618 which states "To check if retpoline and import optimizations are enabled, you can use the PowerShell cmdlet Get-SpeculationControlSettings. You can also use NtQuerySystemInformation to programmatically query retpoline status."

Unfortuantely I do not know how to programmatically query the retpoline status, but I would do so if I knew how. I have run the Get-SpeculationControlSettings in the past though, and it seems that expected behavior is supposed to include checking for Retpoline status. Maybe the Powershell cmdlet has not been updated to reflect this, but that isn't entirely clear.

I am running on an i7-4790K so I believe to be impacted by Retpoline and am curious to understand more.