It seems funny that I have to post this on a rumors board, but:
Rumors ≠ future products.
Speculation ≠ facts.
Standards ≠ products.
The standardization of Firewire 1600 or anything similar has little to do with the
creation of related products. Vaporware is a product that's announced and never brought to market, not a standard that people decide not to use. And for that matter, it could be used and you might not know about it. Or were you already aware that Firewire 800 has been used in industrial applications and jet fighters?
Talk is very cheap. It's funny to watch people trash a port or protocol without a technical or market understanding of what is happening or what will happen.
Or better yet, prognosticate about things which are not even close to hitting the market. That's what all the anti- pundits do ("iPad will fail! iPhone is doomed!", and I'm still amazed people pay them to write or speak, because their opinions have been shown to be demonstrably false repeatedly.
Do you really want to appear like a Rob Enderle?
Back to the subject of USB 3.0 cards, I wouldn't be surprised if they turn up in 6 months to a year - If writes drivers, a glut of cards will show up. Otherwise, I wouldn't put it past Sonnet or
OWC to write drivers and build their own cards. Similar things have happened in the past.