Today's nightly build and the active trunk should become the next Release: iMSCP v1.0.1.6 in 2 weeks, and first stable release once founded errors are fixed.
Please test new installation on a fresh system and update from prior versions / ispcp and report errors if any. If there are none, please post it, too. This way we can release iMSCP stable earlier...
Any questions? Don't hesitate to ask. Caution: Do not forget to backup before install / update!
What is new in beta 6:
- Layout color switcher + layout Enhancement
- Support for Apache mpm ITK
- Support SSL for customers
All features since we started this project:
- Auto-installer (including both tree builder and setup based on Dialog)
- Debug Bar - (Development helper)
- Dovecot support
- Engine rewrite including the following new features:
- Ability to turn off one or many services/servers such as Apache, bind9, Postfix...
- Ability to setup DNS service (Bind9) as Master or Slave server
- New logger
- php.ini per user account (default), or per domain entity (vhost)
- Events system (Kind of plugins/Hooks system)
- Ftp files manager on-click-Logon
- i18n - Switch to gettext (Machine Object Files)
- IPv6 support
- Layout color switcher
- PHP directives editor
- Software Installer
- SSL support for master vhost, postfix, imap/pop and proftpd
- SSL for customers
- Switch from MyISAM to InnoDB engine (Database)
- Migration script from ispCP 1.0.7 to i-MSCP
- New XHTML theme
and many others we forgot to mention 
Once we go stable we promise a full new set of features, like multiserver setup and other.