Just received an email from Housemarque this morning.
"Alongside Nex Machina we are also announcing a 4K/HDR update to Resogun.
Imagine all of the voxels, particle effects and the fast-paced action even in greater, more eye-candy indulged experience. No actual date to announce yet, but it should be coming soon enough."
I hope this includes the supersampling functionality for 1080p play. Not interested in moving off the standard for quite a while. Resogun is the shiznit, though.