Nox 4 is now officially available from XBMC.org Repo. It is recommended to do a clean install (delete skin.aeon.nox folder rather than installing over the top of existing skin) as final release may break current personal settings.
I’ve installed Nox and I get a “dependencies not met” error message?
Apart from the initial caching of art performed in Frodo, the way XBMC supports multiple image types has changed as well. See here for more information http://forum.xbmc.org/showthread.php?tid=142589
You will need to install the latest version of Artwork Downloader to display logos, landscape thumbs, posters etc.
Once you run AD over your library the available art for individual movies and tv shows can be selected via the “choose art” option from the info panel for Movies and TV Shows.
To use your local images enable it in the addon advanced settings
Note:
In the skin settings there is an excellent help menu that lists the required addons to get the best results using Nox. I recommend checking that list to see what addons you've installed as well as the version. Phil has also created a video preview highlighting many of the changes in Nox 4 http://forum.xbmc.org/showthread.php?tid=148413 Hope this helps you getting started in using my favourite skin.