From a January press release at CES:
Play-Fi meets Alexa: New Play-Fi products due this year from Klipsch and DTS-brand Phorus are equipped with far-field microphones and built-in voice access to the Amazon Alexa cloud-based personal assistant. The products will enable consumers to use the Alexa voice service to control a variety of smart-home devices in the house as well as control other Alexa skills, including streaming of Amazon’s music service.
In addition, the Onkyo, Pioneer and Integra products will be compatible with Amazon Alexa via a DTS Play-Fi firmware update, enabling consumers to talk to an Amazon Echo, Tap or Dot smart speaker to control select functions of the audio brands’ multiroom speakers. The audio brands’ speakers will also be able to stream the Amazon speakers’ music services and other Amazon cloud-based audio services.
Something is still planned... It would seem.