Full Version. 2048x4096 compressed diffuse maps and 2048x4096 compressed normal map. The screenshot refer to this one. It's not really a full 4k, they have a rectangular shape.

Full Version. 2048x4096 compressed diffuse maps and 1024x2048 compressed normal map.

Full Version. 1024x2048 compressed diffuse maps and 512x1024 compressed normal map. (Note: untested!)