Update rosbag2 section in Iron release notes (ros2#3593)

* Update rosbag2 section in Iron release notes

Signed-off-by: Michael Orlov <michael.orlov@apex.ai>
Co-authored-by: Chris Lalancette <clalancette@gmail.com>

source/Releases/Release-Iron-Irwini.rst

@@ -599,6 +599,71 @@ This release also allows playing back data from either the ``sqlite3`` file form
 
 See https://github.com/ros2/rosbag2/pull/1160 for more information.
 
+Store message definitions in bag files with SQLite3 plugin
+""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
+
+Now we support saving message definitions to the ``sqlite3`` database file in the same format
+as we are saving it to the ``mcap`` file.
+This opens an opportunity for third-party tools to have
+the ability to deserialize rosbag2 files without having the correct version of all the original
+.msg files on the machine that is decoding the bag file recorded with ``sqlite3`` plugin.
+
+See https://github.com/ros2/rosbag2/issues/782 and https://github.com/ros2/rosbag2/pull/1293 for
+more information.
+
+
+New playback and recording controls
+"""""""""""""""""""""""""""""""""""
+
+Several pull requests have been added to enhance the user's control over playback of bags.
+Pull request `960 <https://github.com/ros2/rosbag2/pull/960>`_ adds the ability to play bag for
+a specified number of seconds.
+And pull request `1005 <https://github.com/ros2/rosbag2/pull/1005>`_ allows to play bag until specified timestamp.
+Another pull request `1007 <https://github.com/ros2/rosbag2/pull/1007>`_ adds the ability to
+stop playback remotely via service call.
+Stop will unpause player if it was in pause mode, stop playback and force exit from play() method if it was in progress.
+
+Managing recording via service calls
+""""""""""""""""""""""""""""""""""""
+
+There are new options to control the recording process from remote nodes.
+The pull request `1131 <https://github.com/ros2/rosbag2/pull/1131>`_ adds the ability to pause and
+resume recording via service calls.
+Another pull request `1115 <https://github.com/ros2/rosbag2/pull/1115>`_ adds the ability to split
+bags during recording by sending service call.
+
+Filtering topics via regular expression during playback
+"""""""""""""""""""""""""""""""""""""""""""""""""""""""
+
+Users sometimes need to replay only a subset of topics from recorded bags and the following two pull request
+adds such capability.
+Pull request `1034 <https://github.com/ros2/rosbag2/pull/1034>`_ adds a new option
+``--topics-regex`` that allows filtering topics via regular expressions.
+The ``--topics-regex`` option accepts multiple regular expressions separated by space.
+And pull request `1046 <https://github.com/ros2/rosbag2/pull/1046>`_ adds the ability to exclude some
+certain topics from being replayed by providing regular expression in a new ``--exclude``
+(and ``-x``) option.
+
+Allow plugins to register their own CLI verb arguments
+""""""""""""""""""""""""""""""""""""""""""""""""""""""
+
+Pull request `1209 <https://github.com/ros2/rosbag2/pull/1209>`_ adds the ability for ``rosbag2`` plugins to
+register an optional Python entrypoint providing plugin-specific CLI argument values.
+As a result the command line option ``--storage-preset-profile`` for ``ros2 bag record`` verb will have
+different valid options depending on the underlying storage plugin.
+
+Other changes
+"""""""""""""
+
+The pull request `1038 <https://github.com/ros2/rosbag2/pull/1038>`_ adds the ability to record
+any key/value pair in 'custom' field in metadata.yaml file.
+It is useful when users need to save some hardware specific id or coordinates where the recording was captured.
+And pull request `1180 <https://github.com/ros2/rosbag2/pull/1180>`_ adds an option to change the underlying
+node name for the recorder via providing the new command line ``--node-name`` option.
+This option might be used for creating remote distributed recording with multiple rosbag2 recorder instances.
+It provides the ability to send service calls for managing the recording process to the dedicated
+rosbag2 recorder instances.
+
 ``rosidl_python``
 ^^^^^^^^^^^^^^^^^