I can confirm solid LTE around the tri-county mall area. Bought the wife a GS4 on Wednesday at BB and had good signal. Also, the test phones at the Sprint store (at least the couple that I played with) were showing 4G on Monday in Tri-County. Signal is up and down at my home near the cross streets of RT. 4 and Mulhauser....I'll get the sensorly app on her phone and play around this weekend. My GS2 has shown a little improvement in reception at my home as well in the past couple of weeks. Just waiting on the GN3 before I upgrade my line.
SNOW