Nokia Australia announced in a series of tweets that Bluetooth 4.0 Low Energy support is not coming to the Lumia 820, 920 and 1020 smartphones with the upcoming GDR3 Bittersweet shimmer update.
Nokia Australia later clarified the reason behind the lack of Bluetooth 4.0 LE support within the next major WP8 release is hardware limitations.
That sounds a bit strange, given that the recently released Nokia Amber update adds Bluetooth 4.0 LE to the Lumia 520, 620, and 720, while Lumia 625 has it out of the box.
@rath79 Hi Gary, Bluetooth v4.0 Low Energy (LE) technology will not be available for Nokia Lumia 8xx, 9xx and 1020.
Nokia Australia (@NokiaAustralia) September 30, 2013
Bluetooth 4.0 LE is rather useful for many accessories, such as temperature sensors, heart-rate and fitness monitors, plus the rumored Nokia Treasure Tag accessory.
Even though the information comes from Nokia Australia, we are still hoping this is some kind of misunderstanding and waiting for an official statement from Nokia's HQ.