Multithreading will likely be in the next update but that may realistically be the final, depending on how the timing works out. We still plan to release a final product by the end of this year. The current development work is focused on multithreading and other renderer improvements and may be ready in 2 months or so, but by that time we are so close to the finished release that it may not be worth spending time on an interim release. For your purposes too it would be a matter of a few weeks difference so it may not be a significant difference given the great speed-up that will come with multi-threading.
In any case since it will no doubt take you a while to construct a fully realistic world I would recommend purchasing at least one Deep license now; it will be at a discount anyway, and will give you time to build your world so that it is ready by the time faster rendering is available. In addition being a registered user will give you first access to any multithreading updates that are released prior to the final.
- Oshyan