Bose Soundflex
In one of many of the obtrusive ads on you tube Bose touts its' new Soundflex]TM] Bluetooth[TmM]. Fair enough. It appears it is mono. They casually mention tha two speakers are better. That gives you "stereo." This is achieved by pairing one speaker tp the other.
I am not sure just having two speakers makes stereo.
Despite my criticism I think this is a step in the right direction toward true stereo in such set ups. There needs to be substantial improvement in such speakers.