Is there somewhere I can find full pricing information for every spec configuration? I dislike how difficult this is to find on new non-Apple laptop announcements.

New XPS models are not available yet. The official press release for CES lists starting price: $999 and the avaiability date is stated as "COMMING SOON"

https://app.box.com/s/nlzmc9x01j4j2vcd2awpbyoxgxvovo6z/1/144...

Here's the specs but no configurator seems to be set up yet: http://www.dell.com/en-us/shop/productdetails/xps-15-9560-la...

The entire spec sheet was leaked couple of weeks thanks to a scraped listing on Dell's website. More details here http://www.windowscentral.com/dell-refreshed-xps-15-9560

I for one would welcome a top spec XPS15 for development. A more efficient Quad core Kaby Lake, gorgeous 4k screen on 1050 4gb GPU, 32gb memory, 1tb NVME - and a proper selection of ports including a Kensington lock as well as a full set of keys (FN+Esc). Oh and they bumped the battery to 97whr.

I wonder if it still has just the one usb-c port on the side.

What OS would you use? Or are you windows based?

I'd use Windows actually, being a .Net developer. I used Ubuntu for a while too (when doing Php), but have too many bad memories of trying to just get my darned X1 Carbon (gen1) trackpad to work properly. Win10 is great now.

But have they fixed the CPU whine?

You want believe me but it was fixed even in 9550 model after one of firmware updates. And now I don't hear anything.