The D6 got new firmware, US link
https://downloadcenter.nikonimglib.com/en/products/545/D6.htmlUpdates “C” Firmware Version 1.11 to 1.20:
"A Recall shooting functions (hold) item has been added to Custom Setting f3 Custom controls. Assigning this role to a control lets you recall previously-saved values for settings such as exposure and metering by pressing the control once during viewfinder photography. The previous values can be restored by pressing the control a second time. Recall shooting functions (hold) can be assigned to the Preview button, Fn1 button, Fn2 button, Fn button for vertical shooting, AF-ON button, Sub-selector center, AF-ON button for vertical shooting, Movie record button, or Lens focus function buttons.
• A new option, Prefer sub-selector center, has been added to the Custom Settings menu at position f13. Although at default settings the sub-selector cannot be used to position the focus point while the center is pressed, selecting Off for Prefer sub-selector center lets you hold the center and still position the focus point by pressing the sub-selector up, down, left, or right. You can, for example, assign AF-area mode to the center of the sub-selector and then use the sub-selector to position the focus point while the center still serves in the AF-area mode role.
• A Focus point selection speed item has been added to Custom Setting a17 Focus point options. The speed at which the focus points for viewfinder photography can be cycled by holding the sub-selector or keeping the multi selector pressed up, down, left, or right can be chosen from Normal, High, and Extra high.
• Ratings are now displayed at all times during playback zoom, even when None (image only) is selected for playback display options.
• The camera can now more reliably focus on poorly-lit low-contrast subjects when dynamic-area AF is selected for AF-area mode."
I will personally appreciate the first one a lot, as I use recall shooting functions to switch between settings for a slowly moving subject and a fast-moving subject and I always found it awkward to have to hold the button down, I'm getting used to it but this "hold" function will presumably allow one to use this custom function as a toggle. This will help a lot.
Dynamic area AF improvements in low light are also welcome; in low light sometimes there is a "wait while it figures out what to do" kind of delay in very low light in dynamic-area modes, now they seem to have made improvements into this area, hopefully significant ones. ;-)
Improvements to the joystick function should make it easier to use multiple different focus area modes fluidly.
