I think I just saw something I wasn't supposed to. I'm an Ultra User, and a few moments ago, a new option appeared in the web interface as part of the "Tools" drop down (beneath the "Agent" mode that appeared today). It was called "Dynamic Mode" and the description was something like "Responses that go beyond text." Hm. Interesting. I clicked it, prompted simply, "Hello," and hit Enter. It took a moment (with a custom animation that resembled shadowy UI blocks over a glowing blue contrail) and then began generating a custom, clickable desktop UI – very similar to Anthropic's 5-day beta demo called "Imagine with Claude" (https://claude.ai/imagine/)
It was so cool! But the minute I whipped out screen recording and hit refresh… it was gone! đ¨
EDIT: It's back