I wanted to start this thread to help answer any questions you may have around the RealD 3D integration in the May UDK release.
What kind of hardware do I need?
Any display that supports Side by Side 3D will work. This includes all 3DTVs and most PC monitors (I use the LG passive eyewear monitor and Playstation active eyewear monitor in my office).
How do I enable 3D?
There is a console command you can use in game.
When I view it on a TV, the 3D is too much. Can I reduce it?
Yes. There is a console command for setting your display size. It is:
reald stereowidth <value>, where "value" is 2x the screenwidth in cm. Note, these values can be estimates, so 100-200 is good for PC monitors and 400-500 is good for TVs.
If you have any other questions, please post here and I'll try to stop by and answer as often as I can.
Confirmed compatible 3D monitors:
LG Cinema 3D D2342
Playstation 3D Monitor
(I'll list more as I get confirmation).
I also posted a Youtube 3D video showing off what our DBA technology does to a scene. You can find it here: http://youtu.be/9DPecoytPHc