NovelAI is preparing to release the full private test of its latest version, NovelAI Diffusion V4, soon. The updates indicate that the new version will be more obedient to commands, allowing for better expression of characters within their environments. Various users have shared their excitement about the upcoming release, highlighting the improved capabilities of the AI in generating illustrations. The private test is expected to showcase the enhancements in character control and text integration, with users encouraged to experiment with curated outputs as well.