Base UI is now the default component library for shadcn/ui starting July 2026, replacing Radix due to its stability, regular updates, and community preference. The platform also introduced new chat interface components including MessageScroller, Message, Bubble, Attachment, and Marker for building conversational UIs. Additionally, GitHub registries were launched, allowing any public repository to become a registry for distributing components and other project files directly through the shadcn CLI.