The state of things
- The rollout is happening across all regions concurrently
- The option becomes available when your device gets firmware version 4812. This follows the numbering convention for first gen Echo and Dot devices. It's unclear so far what firmware version is required on second gen devices, as they use a different pattern.
- There doesn't seem to be a way to force a firmware upgrade of your devices.
- Using the source-editing trick we described here does not allow you to enable the wake word prior to getting the firmware upgrade...
Trying things out