During April 2026, this developer enhanced Bluetooth audio telemetry in the zephyrproject-rtos/zephyr repository by implementing Broadcast Isochronous Stream (BIS) number logging. Working in C within an embedded systems context, they extended the broadcast_source_stream data structure to store BIS numbers per stream and updated the stream_start callback to persist this information. These changes improved the granularity of telemetry data, enabling more precise tracking and diagnosis of Bluetooth audio streams. The update also refined log messages for ISO packets, supporting better downstream diagnostics. No bug fixes were recorded, with the focus placed on feature development and data model improvements.