That would be nice...there are some parts now that do get it...i have seen it reach out as far as the Braintree split so far but then it just drops off,hopefully it will reach out further than that.
Just got my first 4G signal sitting at work on the Brighton/Newton line. Will see if it stays connected when I go to my girlfriends house in Brookline, then again when I go home to West Roxbury.