The scoop from Nikon Rumors is that CNX3 is ready but it seems that they may be waiting to release the software to coincide with the next set of camera bodies (D800 D4?) With the recent release of the 64 bit codec I see no reason that this new software will not also be 64 bit based. A little bit late but it should be a big boost to performance. I would guess that part of the delay is the change in relationship with NIK and the fact that this is probably a ground up rework of the software as a result. If the U-point technology is not present however, I think this would be a deal breaker for me.
Well, more like Capture NX2 2.3 is theoretically ready but not released (which is silly, I must say) than NX3. Specifically when Peter wrote "Do no expect Capture NX3 to be released any time soon."
I wouldn't necessarily say that 64 bit automatically equals performance. What is far more crucial to performance is properly written threading and utilization of processor cores. My understanding is that the raw conversion module part of NX (also available in the free SDK from Nikon) is single threaded. If that doesn't change then almost nothing else will really help speed up NX.
Looks like I missed the fine print or rather I wanted to see version 3 not the 2.3 that is rumored. If it is just for some new cameras and includes 64 bit support you are correct that this would not necessarily be a ground up change of the code.
I have just built a new computer replacing an 8 GB RAM machine running an Intel Core 2 Duo with a 16 GB RAM machine with an Intel i7-2600K processor both machines running Win 7 Pro 64 bit. Without CNX2 being 64 bit, I have seen an amazing improvement in how CNX2 runs and I would expect to see more performance if CNX2 was a 64 bit program even if single threaded. But my guess 64 bit CNX will wait for CNX3.