They just seem to be talking about removing the "phone line requirement for all boxes". There's two issues the phoneline is supposed to address today:
1. PPV orders
2. Multiple receivers in same location
Ignoring the PPV issue for a second, and focusing on the multiple-receiver issue, what LonghornXP is saying can work out (up to a point). Using the new, nifty steerable spot beams from the Spaceway satellites, DirecTV could instruct all your receivers to look for a signal at midnight tonight. Then at midnight, the spaceway satellite sends the required signal through a spotbeam only to your metro area. Your receivers get the signal (as well as your neighbors who are "borrowing" a receiver from you), but Aunt Jane (who's also "borrowing" a receiver from you) two states away doesn't get the signal, so her receiver shuts down.
Now as for PPVs - there must be some sort of two way communication, so DirecTV will will probably disable remote PPV ordering without a phone connection ("just use our convenient web or phone-ordering system"), and/or they'll institute some sore of broadband connection. I'd bet its just the former - there's a whole host of issues of getting broadband connections up and running: cat5 to the receiver or wireless (another extra can of worms), DHCP, routers, "DirecTV broke my internet connection"...
So my prediction is that the whole "we're removing the phone line requirement", as far as joe-consumer is concerned, is simply an offical option to choose to NOT plug in a phone line, at the cost of PPV-remote ordering. As for the those interested in DirecTV internals, the account stacker or out-of-market viewer, this also means they're going to use the satellites to try and passively counter this.