After Belenix 0.8 Alpha which included exciting features such as the Google Widgets, Webkit, and KDE 4.2.4 — all built with GCC 4.4.0 in addition to Gnome 2.26, BeleniX 0.8 Beta1 is now available with improvements (bug fixes and functionality) to the KDE 4.3.1 desktop and other apps and new package additions. Several patches/fixes for various packages were taken from the Fedora Core 11 repository.
You need to use the Network Installer in order to install this 0.8 Beta1 Release. The Network Installer will not touch your current environment in any way. It creates a new Boot Environment and installs into that. Your current environment remains as the default one.
You can see the full announcement here: http://www.belenix.org/content/BeleniX-08-Beta1-available-Network-Installer