It's, IMHO, the project that can give to Gentoo the right "power" and "motivation" to become the BEST source-based distribution in the world (is it not already? ;)).
The installer looks really coerent with the "manual-old-style" Gentoo Installation and offers an on-line help to guide the user through the (beautiful) installation process.
There is a graphical partitioning tool and ... some other interesting features.
Good luck Gentoo. Link.
-EDIT- Thanks to KillinMilk for the "errata-corrige".