We are making solid progress on migrating our grids over to the latest version of OpenSim and the first in the newer architecture 0.7x . There are plenty of reason to stay with 0.6x versions, but we want to forge ahead with the future of OpenSim and deal with the issues head-on that way. We are hoping to get a performance lift from our 0.65 installs (Justin promised actually ;0). Moving all the assets around is actually a pretty big job and we have a lot of custom code linking to our admin and control systems (via Drupal). We just got the first regions up and will start the stress testing next week.
We will also bring over the Unity3D integration code with a bunch of new improvements. We think we can show large chunks of regions via the browser shortly. This is key to our onramp strategy allowing mainstream users to get a sense of what is going on down on the grid. There is some great, smart stuff to make this happen. We are also working on using freeswitch to handle voice. We expect to have a full release to Heritage Key in October. Follow our twitter stream @rezzable next week if you want to join us for the stress test sessions.