I've seen n41 in rural-ish areas already, plus some B41 on sites that were 25/26 only a year ago. They seem to be getting better about not just deploying a single band in places, though from what I've seen the more rural setup appears to be whatever B/n71 they have, plus a 5x5 B2 carrier to use as an NR anchor. Narrower bandwidths go further, hence running 5x5 when they definitely have the spectrum for more.
The unusual factor is the Band 41 holdings in the primary county for each of the 3 New York cities. T-Mobile effectively owns all Band 41 in Albany, where they are also getting 60Mhz of n77. Where as in the n77 20Mhz markets for Rochester and Syracuse, Krisar, Inc. - George W. Bott fragments the n41 spectrum. In Rochester they could do 100Mhz and 40Mhz. Syracuse is 60Mhz plus 20Mhz and 20Mhz.