I'm in NYC, an A/L market, I'm following closely an area where Sprint has around 50 sites, 29 of it have already NV upgrades, 21 LTE and 8 3G only (including my tower), what i have seen from my observation is that 2-3 month ago it took them about 90 days to go from 3G accepted to LTE accepted, as time goes on it becomes longer and longer, average now is about 4 month to go from 3G to LTE.