From what I've seen they're really just typos. Looks like whoever put those up just grabbed generic highlighted features and slapped them on the webpage. From what I have been able to tell, the PCIe version of the 6800's are not out yet (dammit). The closest I've been able to figure out of a date is from Alienware. You can configure one of their PCIe systems with 6800 cards, but it says the wait time on that card is 42 days (it's said the same thing the past 2 weeks too). Then again, there's nothing to say that estimate is correct....at least they had enough confidnence to put it up though.
When I was at Siggraph a month ago some Nvidia marketing/sales guy told me they should already be out. Obviously they're not ... I was going to push him further, but what's the use. Marketing/Sales just tells you what you want to hear.
Pain in the ass waiting for these cards. But I guess if you can't meet demand for AGP ... why bother rush the type few people have the use for.
\m/