Not just Gravity Storms with new housings, but new pickups altogether.
Dark Matter 2 Bridge | DiMarzio
Dark Matter 2 Neck | DiMarzio
Dark Matter 2 Middle | DiMarzio
They're all low output ceramic pickups (almost like a throwback to when he was using PAF Pros), and all use the virtual vintage technology. They're already coming stock on the new Premium Jem.
So far the specks sound really good. And I like the silly housings actually. Will have to try one of these for a steampunk themed RG project.