doc: releases: release-notes-3.7: Add info for Handsfree AG

Added information about implementing handsfree AG to the Bluetooth section. Signed-off-by: Lyle Zhu <[email protected]>
zephyrproject-rtos · May 19, 2024 · 34c84ec · 34c84ec
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diff --git a/doc/releases/release-notes-3.7.rst b/doc/releases/release-notes-3.7.rst
@@ -97,6 +97,11 @@ Bluetooth
     This Service exposes the ability to declare multiple instances of the GATT service,
     allowing multiple serial endpoints to be used for different purposes.
 
+  * Implemented Hands-free Audio Gateway (AG), enabled by the :kconfig:option:`CONFIG_BT_HFP_AG`.
+    It works as a device that is the gateway of the audio. Typical device acting as Audio
+    Gateway is cellular phone. It controls the device (Hands-free Unit), that is the remote
+    audio input and output mechanism.
+
 Boards & SoC Support
 ********************