"- A native Mac OS X driver is implemented, for better integration with the Mac desktop environment. The full range of driver features are supported, including OpenGL, window management, clipboard, drag & drop, system tray, etc.
- X11 is no longer needed on Mac OS X, but the X11 driver is still supported, e.g. when running remotely."
Ken Thomases from CodeWeavers has done a great job implementing the winemac driver. It's getting a lot better with each release but there are still some performance issues compared to X11, so I wouldn't dump X11 just yet if you have a stable app using it.
"- A native Mac OS X driver is implemented, for better integration with the Mac desktop environment. The full range of driver features are supported, including OpenGL, window management, clipboard, drag & drop, system tray, etc.
- X11 is no longer needed on Mac OS X, but the X11 driver is still supported, e.g. when running remotely."