In brief the new directory structure:
https://svn.xwiki.org/svnroot/xwiki |_ platform/ |_ curriki/ |_ sandbox/ |_ enterprise/ |_ manager/ |_ watch/ |_ workspaces/ |_ xeclipse/ |_ xlet/ (or whatever name we choose for it)
Note that each project directory name corresponds to a wiki. For example "manager" --> http://manager.xwiki.org