We're getting there: The first Release Candidate for Geeklog 1.6.0 is now available for download.
There were only a few changes over beta 3, mostly in the install script. As the name "release candidate" suggests, we don't expect any more significant changes now, so if you haven't had a chance to try out one of the betas, now would be a good time to give 1.6.0 a test drive before it becomes final.