Wolfenstein Cosmetic Upgrade is an ECWolf mod, made by Executor. It was released on September 12, 2016.
The mod features high quality music and sounds, and virtually all graphics have been changed. As the title suggests, the mod is an upgrade with more detailed graphics, better sounds etc. for original Wolfenstein 3D.
It is currently available as a beta 2, compatible with the recent build of ECWolf. A companion piece was also released for Spear of Destiny, using the same PK3 file.