I emailed Grayboe about Savage stocks using the "Questions" tool on their contact page.
About a week later, I received a response from Mr. Ryan McMillan himself!

Hi Tom,Yes, likely in 2018. When they become available, we will announce it on our social media and website.


Cheers,


Ryan McMillan
President, Grayboe, LLC

I thought this was good news so I figured I'd pass it on.
I'd love to see Savage offer something similar to the Stealth but in a Grayboe.
I also hope Grayboe starts offering LH stocks. The RH stocks can be inlet for a LH action but that seems like it would make for a more flexible stock if both sides were inlet.
-Tom