I rarely leave the city, so the lack of coverage in rural areas doesn't bother me. In NYC I have to say I've noticed a small improvement in reception over AT&T - buildings where I've been dead in the water before now have some connectivity.

So far so good, this new announcement is just icing on the cake, especially as a Canadian expat. It used to be that when visiting home I'd inevitably wind up with one helluva phone bill, and that's just with extremely minimal texting and calling just to herd cats.