[dang]

We changed the URL from https://petapixel.com/2021/08/30/googles-new-ai-photo-upscal..., which points to this. Both articles point to this one, which had a recent and related thread:

High Fidelity Image Generation Using Diffusion Models - https://news.ycombinator.com/item?id=27858893 - July 2021 (19 comments)