Does the final version of the health care bill really promote buying insurance across state lines?

Last night I was discussing health care with a friend and he brought up the issue of buying insurance across state lines. I had been under the impression that the final bill allowed for this. When I searched on line, it seems is allows for states to have agreements to allow insurers from other states, but they have to meet regulations of that state. Here is an article I found http://voices.washingtonpost.com/ezra-klein/2010/02/five_compronises_in_health_car.html

So, that to me means it is still really up to the state government whether an individual can buy across state lines.

I’d like to know how you understand this part of the health care bill to actually work in practice?