-The new ``Io::streamto()`` function has been inspired by the existing ``Comm::sendto()`` function (which also derives from the
-ptask model). The user can specify a ``src_disk`` on a ``src_host`` and a ``dst_disk`` on a ``dst_host`` to stream data of a
-given ``size``. Note that disks are optional, allowing users to simulate some kind of "disk-to-memory" or "memory-to-disk" I/O
-streams.
+Expressing your application as a DAG or a workflow is even more integrated than before. We added a new tutorial on simulating
+DAGs and a DAG loader for workflows using the `wfcommons formalism <https://wfcommons.org/>`_. Starting an activity is now
+properly delayed until after all its dependencies are fulfilled. We also added a notion of :ref:`Task <API_s4u_Tasks>`, a sort
+of activity that can be fired several time. It's very useful to represent complex workflows. We added a ``on_this`` variant of
+:ref:`every signal <s4u_API_signals>`, to react to the signals emitted by one object instance only. This is sometimes easier than
+reacting to every signals of a class, and then filtering on the object you want. Activity signals (veto, suspend, resume,
+completion) are now specialized by activity class. That is, callbacks registered in Exec::on_suspend_cb will not be fired for
+Comms nor Ios
+
+Three new useful plugins were added: The :ref:`battery plugin<plugin_battery>` can be used to create batteries that get discharged
+by the energy consumption of a given host, the :ref:`solar panel plugin <plugin_solar_panel>` can be used to create
+solar panels which energy production depends on the solar irradiance and the :ref:`chiller plugin <plugin_chiller>` can be used to
+create chillers and compensate the heat generated by hosts. These plugins could probably be better integrated
+in the framework, but our goal is to include in SimGrid the building blocks upon which everybody would agree, while the model
+elements that are more arguable are provided as plugins, in the hope that the users will carefully assess the plugins and adapt
+them to their specific needs before usage. Here for example, there is several models of batteries (the one provided does not
+take the aging into account), and would not be adapted to every studies.