The german company Digital Image offers a modified projectiondesign F32 projector that is capable of active stereo at true 120Hz. This is made possible by integrating a second image generation pipeline into the original F32 housing.
Digital Image claims that they developed the technology behind the F10-AS3D, available directly from projectiondesign. Here is an inteview with Anders Lokke from projectiondesign on the F10-AS3D:
Rumour has it that later this year Projection Design is planing to launch an active stereo variant of the WQXGA F35. Hopefully it will feature the same true 120Hz technologie than the modified F32 by Digital Image.