latest leaked version. use the old v4.X patch (included).
your old 4.X projects will still work (mine do). 
RapidGator :
http://rapidgator.net/file/ab396605539de93300a30c353efea93c/Unity.4.6b7.Beta.WIN-GAAKS.rar.html
Uploaded :
http://uploaded.net/file/x3ymb64c
Trackback from your site.