It's unknown when FSR is expected to be ready. AMD has promised the technology since the launch of the RDNA2 architecture -- but so far, there's no sign it's close to launch. A new patent from AMD discusses a "Gaming Super Resolution" technique that sounds a lot like FSR. VideoCardz wraps up the highlights over here.
There is no guarantee that FSR is indeed based on this patent. It provides a possible explanation of what FSR could be, but as with a lot of patents, it reads very generic.
[…] A super resolution processing method is provided which improves processing performance. The method includes receiving an input image having a first resolution, generating linear down-sampled versions of the input image by down-sampling the input image via a linear upscaling network and generating non-linear down-sampled versions of the input image by down-sampling the input image via a non-linear upscaling network. The method also includes converting the down-sampled versions of the input image into pixels of an output image having a second resolution higher than the first resolution and providing the output image for display. […]-- AMD patent