The best results are on track. Korea Telecom is using 100 MHz of spectrum at 3.5 GHz and tested at 193-430 Mbps down. Upload was at 4G speeds. Verizon is using 400 MHz at 28 GHz and the best results were 600-900 MHz. Note that these almost all were clear line of sight, no windows or walls, and only a short distance. Two tests through windows saw a 60-80% drop-off.
Speeds will probably go up as the equipment improves; speeds will probably fall as more people connect. Below, a table with 7 independent test results. More very welcome.
430 Mbps corresponds to what Deutsche Telekom measured on a similar system in Warsaw and what Sprint & T-Mobile expect when they turn on their 5G:
In “daily-use” cases (farther away from the station, on a street, in our #5G_LAB building) we are registering speeds around 350-500 Mbps, which is really great considering the circumstances.
85% or more of "5G" will be similar to the Korean and DT systems. Verizon and AT&T mmWave should be about three times as fast.
600-900 for 400 MHz mmWave is actually more than the 450 megabits Verizon press release suggested. (Below) 400 MHz should provide 2-5 gigabits shared in the lab and often reach a gigabit to individual users. Verizon has 800 MHz to eventually use. No carrier has suggested consumer speeds above about a gigabit, although two gigabits should be practical for fixed wireless with larger antennas.
Lots of bugs, inconsistencies, and problems have to be fixed but the best results are on track.