Generating realistic 3D content has been a long-standing problem and graphics, which has recently attracted increasing attention. This workshop aims to bring together researchers to explore recent advances and future directions toward building fully controllable 3D content generation pipelines. We focus on four key aspects: (1) Representations suitable for generating high-quality and controllable 3D assets; (2) Modeling techniques that enable scalable, diverse, and photorealistic generation of humans, objects, and scenes; (3) Interaction modeling for capturing dynamic human-object relations with physical realism; (4) Applications of 3D content creation in areas such as embodied AI, construction and digital design.