I just see in my usage that I can release tens of features a day, whereas I'd be able to release one or two a day usually. I don't know if it's 100x, but it's definitely more than 10x.
The biggest thing to get right is to let the LLMs do what they're great at (code implementation from very detailed specs, and code review), and you do what humans are great (architecture and making sure the high level of the implementation is sane). That way, you get the best of both worlds, and a lot of speed at high quality.
Does this speed of development only apply to the early stages, or will it slow down as the codebase grows? I have yet to see these 100x improvements (and the claims themselves keep getting bigger) on anything more than prototype scale, rather than month-long projects.
No doubt AI boosters will claim we have found an O(1) productivity enhancer that is somehow two orders of magnitude better than anything else before. This is entering lunacy territory.