http://www.engadget.com/2008/08/21/s...adds-stipulat/
It's capped at 5gb and it's only on top of your existing data plan, but I still consider this a semi-decent improvement. It's not going to please those of us used to truly unlimited via WMWiFi or Internet Sharing but it's much better than the old $50/month plan. I would be more impressed if they just counted all data the same and charged $15 for the 5gb cap plan (phone or tether) and $30 for truly unlimited. It would allow people to decide based on casual or power user more than anything else.