Thanks to @nikaranov for this link to a registration on the Bluetooth SIG site. I’m not sure exactly what it is, possibly the registration of a new Bluetooth product or maybe a variant of an existing one.
I imagine the revelation that ‘polar are working on a new product’ is not so surprising. However the SIG registration may signal the IMMINENCY of such a product.
Also interesting, below, is Suunto’s new ANT+ and Bluetooth speed/cadence sensor on https://www.thisisant.com/directory/. Does this mean they are planning an AMBIT4 that is compatible again with ANT+ sensors? Or is it just merely a sensor that is backward compatible from the Bluetooth only AMBIT3 to the BTLE and ANT compatible SMBIT2.