While there wasn't too much progress for June, a new Radeon FreeBSD driver update came this week to the AMD GPU FreeBSD Wiki.
There's now a yet-to-be-merged patch available that may solve a TTM crashing issue. Beyond that, the note dated from 2 July states, "In parallel, patches to Mesa were submitted upstream. Some of them are already committed. I hope that all of them will be integrated before Mesa 9.2."
Mesa 9.2 will be branched soon in anticipation of a release in August. Hopefully the necessary FreeBSD support code will land in time to improve the R600 Gallium3D driver for non-Linux users.