As described in "Release early, release often" you now can download revision 1 of the Gaia Gamma ruleset from the sidebar to the right. The first release in this ongoing design process naturally is very short... just the front cover, some blurb, a budding table of content and one page of rules explaining the various die notations.
Nonetheless I would be happy about feedback of every type. Let me know what you think, point to errors or areas that should be improved, etc. The next release will follow shortly.