doc: release: 3.3: Add note on MCUmgr transports
Adds details on additional Kconfigs that need to be selected for
MCUmgr transports.
@@ -70,6 +70,27 @@ Changes in this release
:kconfig:option:`CONFIG_MCUMGR_TRANSPORT_BT_AUTOMATIC_INIT` should be
disabled and the application should call :c:func:`smp_bt_start` at startup.
+* MCUmgr transport Kconfigs have changed from ``select`` to ``depends on``
+ which means that for applications using the Bluetooth transport,
+ applications will now need to enable the following:
+
+ * :kconfig:option:`CONFIG_BT`
+ * :kconfig:option:`CONFIG_BT_PERIPHERAL`
+
+ For CDC or serial transports:
+
+ * :kconfig:option:`CONFIG_CONSOLE`
+
+ For shell transport:
+
+ * :kconfig:option:`CONFIG_SHELL`
+ * :kconfig:option:`CONFIG_SHELL_BACKEND_SERIAL`
+
+ For UDP transport:
+
+ * :kconfig:option:`CONFIG_NETWORKING`
+ * :kconfig:option:`CONFIG_NET_UDP`
+
Removed APIs in this release
============================
