Hey Guys,
DISA has released and posted the Draft RHEL6 STIG here: http://iase.disa.mil/stigs/os/unix/red_hat.html
I've written up some language around what this means, timelines, and usage here: https://blog-shawndwells.rhcloud.com/2013/02/draft-rhel6-stig-released/
In short: 2013-02-12: DISA Initial Draft Released. Gives public a chance to comment on the requirements (e.g., "this will break my system!"). 2013-02-26: Public comment period ends. SCAP Security Guide community addresses any findings. 2013-03-19: "Final Draft" release. Cycle of feedback repeats. OVAL content to be included (the automated scanning piece). 2013-04/05: Production STIG released
-Shawn