One thing that stuck out to me from the blog post that no one is talking about is that they said pssr 2 is still getting 6 months of refinement which means this isn't even the final version of this iteration.
The updated version of 2.0 will be ready just in time for gta 6! I can see us getting 3.0 another year from now as well.
People seem to think this is last upgrade till ps6, were getting comparable quality in the second version of pssr while fsr and dlss are on their 4th iterations of upscalers.