Z-Image is here, and it's pretty damn great.
Let's make it more NSFW!
Still a work in progress. It can output good genitals, but not always. About 3/5 images are good, working on penis stability specifically for future versions.
Version 1 should be placed in diffusion_models, and uses the official workflow. Version 2 and forward are checkpoints, so you use the normal checkpoint loaders.