That specs make it seem like these wouldn't be quite worth it at launch.

Ampere specs: https://www.nvidia.com/en-us/geforce/graphics-cards/compare/

This looks like a smaller bump than Ampere. 3090 seems cheaper and better than 4080. As people have pointed out, what I'd really like is more / upgradeable RAM. NVidia is trying to not compete with their higher-end cards, but ML tools are increasingly consumer.