The home screen is a large, vertically scrolling list of cards for "stories," or collections of apps and OS components that work together to complete a given task. There's also a Google Now-style section that has "suggestion" cards for tasks -- use them and you'll either add to an existing story or create a new one. The prototype UI also includes a simple split-screen interface, and scales up to tablet size.
Fuchsia isn't based on Linux, like Android or Chrome OS, but it still uses open source code that would let anyone tinker with the inner workings. Apps, meanwhile, are built using Google's Flutter kit, which lets developers write both Android and iOS apps.
Things are clearly coming along. But there's one overriding question: just what role will Fuchsia have? Google's Travis Geiselbrecht stresses that this "isn't a toy thing," but there's no public strategy. Ars speculates that Google is treating this as a sort of Android re-do: what if the company could design a platform while dumping all the technology it no longer needs or wants, such as Linux or any traces of Java? The use of Flutter would let you run Android apps until there's broader software support. It might take years before Fuchsia is ready for public use, assuming that's the ultimate plan, but there could be a day where Android is no longer the center of Google's computing universe.