November 19th update:
We've added additional regions/languages for Google Assistant on November 19th, 2019! Please see the list below
A Bose Music App or firmware update is not necessary to access. The original post is below:
We're pleased to announce that on July 11, 2019, Google Assistant will be available in the following regions/languages:
This is a cloud update and there are no accompanying Bose Music App or speaker Firmware updates at this time. However, the latest version of the Bose Music App is required.
Bose Music App:
System Firmware Versions: