This is a list of confirmed adapter that will work with 5000 series Eyefinity. (Yes some of them are passive)
Personally I thought the would have come out with the 6 port 5870s back in dec, but I havent heard any news since. Those Samsung-ATI ultra thin bezel DisplayPort monitors:http://www.amd.com/us/press-releases/Pages/amd-and-samsung-2010jan07.aspx
"expected to be available in early 2010" "MSRP of USD$3,099 for a six-screen configuration" $516 per screen and I assume "full HD" means 1920x1080.