Was recently released the version 1.2 of Thea, rendering engine biased/unbiased
Thea Render is a state-of-the-art biased/unbiased renderer with a rich set of innovative features, a powerful material system and its own advanced studio, all-in-one.

Among the biggest news in this release there is a Adaptive BSD (field mapping) very powerful..
For now, the new edition 1.2 is currently available only for licensed users.
Finally, it was enhanced Presto rendering engine based exclusively on the GPU and especially on Nvidia CUDA Technology.