Even though I've already updated my 950 (it's a PAL version) the US and EUROPE have officially announced their firmware updates, heres what the US site says:

There will be two distinct versions of the Updater, one for NTSC ( USA) products and another for PAL ( European Products) The USA/NTSC version Will be posted on NikonTechUSA.com and the Euro/PAL version will be posted on Nikon-Euro.com.

(As of right now the Windows / NTSC version is not yet available... ???)

Nikon Corporation has indicated the following items have been corrected or improved in the Coolpix 950 Firmware version 1.1

• The "self portrait mode" green pixel problem has been eliminated.
• Settings that were not retained when the LCD was turned off are now saved
• Improved System reliability many of the bugs causing camera freeze up have been eliminated
• Focus speed in Macro operation has been optimized
• Improved visibility of LCD when shooting with flash The LCD will not dim when shooting with the flash.
• Improved Auto file numbering system operation This may mean the sequential numbering problems have been resolved

Note that I also found zoomed-in scrolling in playback mode to be faster.