Yup! I've had 95% of the new design written out for weeks now. The last unresolved questions revolved around some scene inheritance details, which I've largely sorted. I've been distracted by release prep, but now that its out I should have this ready in short order. I'll note that the primary focus is rolling out the new scene system / format. This enables and improves UI use cases, but the reactivity bits are still being investigated (ex: check out the bevy_quill and bevy_reactor experiments).

Outside of the core reactivity and scenes work, I'm really excited about the improvements in both text rendering and picking. I think both of those will make a huge difference in terms of usability and correctness.

Once those are a bit more stable, I'd like to target a focus system for UI, to enable good keyboard and gamepad menu navigation and to hook up to screen readers.