In trying to get a step ahead, since I have CS5 Photoshop, I went to their site and found out they have a "Adobe PS Camera Raw 6.7 Release Candidate. This is the step just before the final release. This decoder includes the D4, D800, & D800E along with Canons & Fuji Fine Pix cameras. You can go here to DL it and click on another link to see the complete list from the page:
http://labs.adobe.com/technologies/cameraraw6-7/
It downloaded easily and installed fine. I had found some sample shots D4 and they opened up easily. Adobe has a special forum for those who did the DL to discuss how the converter works for them which helps adobe make any final fine tuning to it.
The physical dimensions of the sensors are almost the same since both are Full Frame ones. D4 = 36 x 23.9 and the D800 = 35.9 x 24. Since the D4 is a 16.2 MP camera & has larger pixels, it was designed to be more light sensitive in its normal ISO range up to 12,800 with a boost to 204,800 (not a misprint) while the D800 normal range only goes up to 6400 with a boost to 25,600. The sample shots I opened included a 12,800 which as you can expect was grainy but the image was sharp and detailed.
Still looking for any info from Apple about their update to Aperture which is separate from Adobe and will probably include a variation of the cameras that Adobe includes. But will be shooting more jpegs at first as leonieDF mentions.
I am really looking forward to shooting the real thing! 🙂