Apart from the double speed, Bluetooth 5 also promises to quadruple the range of broadcast. It promises a maximum speed of 48 Mbps for distances up to 300 meters. See a detailed speed distance comparison table between Bluetooth Version 4.1, Version 4.2 and Version 5:
Bluetooth 5 also introduces a new mode of operation known as long range mode. Devices operating in long range mode can sacrifice data rate to achieve longer range/distance of operation. Engineers at Texas Instruments have successfully tested the long range mode by connecting ...