AMD just gave us our first look at a significant update to FSR 4, codenamed "Redstone." The new update is due to arrive in the second half of this year, and looks like something of a catch-up phase to counter Nvidia's recent efforts with DLSS.
Top of the list is Neural Radiance Caching, which AMD says "continually learns how light bounces in a scene to predict and store indirect lighting". FS4 Redstone will also feature machine learning-enhanced ray regeneration, which it says is capable of regenerating inaccurate ray traced pixels.
