i would also like an answer for this. im haviing the same issue on my wacom companion.
Unfortunately, for any reason this feature no more exist in BridgeCC.
Even if you have more and more good reasons to browse 3D files before opening them in PhotoshopCC (extended included) for rendering and or 3D printing.
Hope they came back on their decision.
I would really like this to come back, as I deal with 3d images daily and I do not like having to open the files in order to see what they are.
Why was this taken away, especially when 3D capabilities in PS were increased? Seems very silly.
So if anyone agrees, this is the thread to let Adobe know:
Thread name: "Bridge: Bring back 3D preview"
I cannot tell you how much time I have had to add to my workflow due to this lost feature.
Message was edited by: edsager P.S. Here is the announcement of the loss of my good friend, "3D File format thumbnails and previews" http://helpx.adobe.com/bridge/using/whats-new.html
I cannot tell you (the general "you") how much I desire for this functionality to return.
I think I have withdrawal pains.
Thanks for reading,