Bluetooth is a technology that does not cease to exist, we are going to get to the Bluetooth version 4.2.
The Bluetooth has many years on its shoulders, it was believed that it might die and succumb from other data transmission technologies but in fact it has continued to evolve to be able to still irreplaceable data transmission.
Bluetooth version 4.2 promises great things, it will be 2.5 times faster than previous versions. Of course to benefit from this technology you will just need what you possess the Bluetooth version 4.0, clearly manufacturer are to decide when and how you will get the update.
Bluetooth version 4.2 allow you to access the Internet via IPv6 and 6LoWPAN. Bluetooth 4.2 increased the security systems. Energy consumption will be decreased, tracing the movements will not be automatic, but only by permission.
So hats off to wait with Bluetooth version 4.2.