Can't seem to find that much information about it, but the Mercenary was posted briefly on a Germany based site called edel-optics.de but it's not available there anymore.
However Google seems to find it on a small number of websites. This image is pulled from mr-sunglass.com. Searched on o-review and it indeed was listed with the date February 2019: Mercenary
What do you think about it?
Update Feb 2019: Mercenary is live on Oakley site at $173 with a number of color ways: