With them being DP 1.2, 1 hub per port = 4 x 4 + 1... That's a lot of display options for a single card. I'm curious to see if 3x3 landscape ever makes it in. But heck, I'm still really happy over 5x1 Portrait finally making a showing. I don't want to get too far ahead of myself. :)
A DP 1.2 EyeFinity 6 would be crazy display count.
4x4 + 1 will be theoretically possible from physical card construction I think but AMD
WOULD NOT make driver which Can operate more than 6 screens, I remember when I bought first 5770, first drivers cant support even 3 monitors (of course I have 2x DVI + 1x DP @ VGA adapter) later 6-e card has only 10.6 drivers which Can support 6 screens (10.5 not work correctly on 10 diffrent setup, whatever, intel or amd)
Of course I hope this will be not true, and they will make some drivers and new cards with hub and future cards can operate more and more screens.
my dream for now is 5770 eyefinity-5 card in price of normal 5770 :D, (even can be 5750, effinency dosent matter) , just outputs 8)