In a Red River email was a review on the P800 and a link to 'Epson Print Layout' software available in Japan (software is in English). To read the page you will have to turn on Google Translate.
http://www.epson.jp/products/pro/download/printlayout/I installed it on a Mac. The plugin was balky in my desktop LR 6, but the standalone worked better. Besides layouts, I found it interesting that for the ABW mode you could see the effects of adjustments. I just tried one print - I have to try more before forming an opinion. But it was neat to see how the shades changed with different settings.
The layout looked fine on the screen, but was totally off on the print - I am probably not configuring it correctly. I am not even sure if the P800 is one of the compatible printers since the model numbers are different. I am sure there is some more work to do before it is ready for prime time.
