I wanted to download the new version of install guide and reference guide of the beta version, searching for changes in kickstart installs, new features etc. To my surprise, any of those rpm packages was present in the beta version (neither rhl-gsg, rhl-ig, rhl-install-guide-en or rhl-rg). In the 'doc' directory of the beta release, there is a version of these docs, but they are the exact version of those shipped with 6.1. Stelian.
The documentation is still being developed. It will be available when the product ships.