I heard a Starkey inside sales rep say their Bluetooth solution for the Wi Series should be available by late May. This could be the same product.
EDIT: a quick Google search turned up this PDF from Micro Tech, the Starkey brand I use. Their Mobility Series is the same as the Wi series. From that page:
• New SurfLink Mobile — our small touchscreen remote that
enables easy cell phone and entertainment
streaming with any device that has a bluetooth connection
• Hands-free connectivity to phones: Enables Mobility
hearing aids to be be used as the telephone microphone
— no need to hold anything up to hear or talk
• Acts as a conference mic or assisted listening device
Also, Starkeypro mentions it here.
Both site indicate a May release.
EDIT2: I am not a Starkey expert, just a user.