Original announcement is here, but Nvidia buried it under mountains of unrelated news: https://blogs.nvidia.com/blog/geforce-now-thursday-performan....

Seems like the unlimited RTX 4080 for $20/mo was too good to last. Starting in 2025 or 2026 (depending on your subscription), playtime will be limited to 100 hrs /mo. According to Nvidia, that's more hours than 94% of their users consume.