Alpha versions of the script will be released on a regular basis for those of you who do not want to use SVN.
Please note that this is ALPHA software - no guarantee is made that the software will work. You will need to anticipate possible database structure changes on a frequent basis. You will need to tweak many different thing manually for now until the Admin Panel is complete.
Version 4.0.0 codenamed ROLAND is currently under development. Currently, no stable release is to be expected for a long time. You can browse through SVN to find the working code there.