You’ll find a modular space station built using Shape Grammar along with many of the newer PCG features including Pathfinding and Raycasts.
There’s also a sci-fi device built using Geometry Processing and Spline Meshes, and the rings of Saturn have been created using GPU Compute and GPU Scene Instancing.
If you attended Unreal Fest Seattle, you may recognize the sample’s cosmic environment from the session ‘PCG: Advanced Topics & New Features in UE 5.5’.