The new Qualcomm processor - Snapdragon 845 looks promising. It improved the graphics core, photo capabilities and power distribution between the cores.
Qualcomm announced another innovation related to music. Previously, to listen to music from two headphones, you had to buy an adapter. Now it's enough smartphone with Snapdragon 845 and Bluetooth-headset.
The new chip Qualcomm has learned to play music on multiple devices at the same time. For example, we connect five columns at once and arrange a "holiday" for neighbors. The manufacturer promises about an ideal synchronization.
Echo Dot "does not need"
This scheme is applicable as an alternative to Echo Dot. Instead of buying additional speakers for the "smart column", we buy a pair of speakers and arrange them around the house. We turn on the music on the smartphone and clean the dwelling, listening to your favorite tracks in each room.