The goal is to provide a simple to use but clean and elegant interface that focuses on efficiency when browsing your media. Important considerations are put on usability, performance, and providing the user with flexibility when it comes to customization. Rapier tries to support all the latest features XBMC has to offer as long as it fits in with the skin's design goals.Rapier v4.00 RC1 (16-Aug-11)
This will probably be a quick RC before it goes final. If you find any bugs/inconsistencies please let me know.
If you have a previous version of Rapier installed, it is recommended that you reset the skin settings by going to System->Skin Settings->Reset Skin. You might also want to delete the Textures.db file in userdata->database of your XBMC profile directory.
Check out the readme.txt for full installation instructions.
For a full list of changes, check the changelog
If you have any support questions post them in the forums