For those interested, Epson recently published version N031H5,1.00,A000 on the Epson America website. As usual, they provide no information on what's changed, so after installing it, I took a trip through the various menus on the LCD panel and see that we now have Print Job Information which provides detailed ink usage for the last ten print jobs. You may recall, this was available for the 4900, disappeared for the early versions of the SC-P5000, but is now instated for this printer. Stellar - we now have what we need to create a valid database for measuring ink used for prints.
If any one has further information on any thing else this firmware update does, especially under the hood, please do post here.