No idea, as the old adage goes, it will be done when it's done. This is a marathon, not a sprint.
If you are referring to the original Bioware screenshots of Sleheyron as the tech demo, I have carefully scoured hundreds of Bioware screenshots, including those from early formats, and the Sleheyron screenshots we have are consistent with the early format Dantooine and Kashyyyk, which appear to be in their finished states. Sleheyron is supposed to be kinda drab and bland. However, I do assure you that the areas have their own kind of beauty. I personally believe that my current work is about as good as it gets with the tools that we have. I have gotten better over the years, each attempt to work on Sleheyron has resulted in progressively better models. I do admit that most of my early stuff was very, very bad. And even the demo here on Deadly Stream pales in comparison to what I can now do with lightmaps.
Again, this will be a marathon, not a sprint. I may have to take occasional short breaks, but I will keep coming back to this, I somehow always do. I can't guarantee a constant stream of areas or content, but I will do my best to craft top-notch areas that are consistent with Bioware's intended Sleheyron.
My very first ones were garbage. It was bad. Check some of the first pages here: http://www.lucasforums.com/showthread.php?t=186244
I have gotten progressively better, even though my latest stuff blows even the last demo out of the water.