Could be another XeSS like approach, those with dedicated units on newer AMD hardware get the best version and for cross-vendor + legacy compat it's a slightly worse version in both performance and quality. Or a choice for a fallback to FSR 2/3 instead, having a choice between both? The age old image quality or framerate choice would be interesting. Nice to see them confirm its existence though, look forward to seeing it in action and how it improves