Just buy it now!!!! No, probably wait for the buy out money. I have the d4 and use my Nikon 500 f4.0 vrII lens along with tele converters a lot for my bird photography. I had the d3s before I got the d4. The d4 is a wonderful camera for these low light, cloudy and sometimes rainy days we get here in western Oregon using high iso settings. I have to do very little noise reduction in post processing with the d4. Its got one tough body. I dropped the d4 off my drafting table onto a hardwood floor, camera ok without a mark, floor got injuried with big dent.
I have a better rain coat for the d4 then I do for my body ha ha!!!!