It looks like some of Nokia's Windows Phones have a notable change in store. At a gathering in Hong Kong, as reported by BlogJack, the company said that Bluetooth LE support (part of the 4.0 standard) will come to the Lumia 520, 620 and 720. Strangely absent from that list are the Lumia 820, 920 and the 925 -- all of which are powered by Qualcomm chips that support BT 4.0 at the hardware level. We're also not entirely sure if this update is a part of a more mature Windows Phone release that Microsoft plans on pushing out later this year or whether it's specific to the "Amber" refresh that's tailored to Lumia devices. We've asked Nokia for further details, and we also plan on getting some face-to-face time at its unveiling of a whole new Lumia this Thursday.
Update: Nokia tells us that the Lumia 520, 620 and 720 will get Bluetooth LE support via the Amber update. The company's other Windows Phone 8 powered Lumias will have to wait for a "future update."
Nokia Lumia 620
Nokia Lumia 720