Added roadmap (not written in stone).

doc/index.rst

@@ -17,5 +17,6 @@ Please select a topic in the left hand column.
    source/authors
    source/changelog
    source/internals
-
+   source/roadmap
+
 .. include:: ../README.rst

doc/source/roadmap.rst

@@ -0,0 +1,38 @@
+Roadmap
+=======
+
+The roadmap is not a finite plan, but merely an expression of intentions !
+
+Pymodbus development is mainly driven by contributors, who have an itch, and provide a solution for the community.
+The maintainers are very open to these pull request, and ONLY work to secure that:
+
+- it does not break existing usage/functionality (PR put on hold for next API change release)
+- it is a generic feature (e.g. not just for serial 9.600 bps)
+- it have proper test cases, to ensure against side effects.
+
+It is important to note the maintainer do NOT reject ANY pull request that emcompases the above criteria.
+It is the community that decides how pymodbus evolves NOT the maintainers !
+
+The following bullet points are what the maintainers focus on:
+
+- 3.7.4, bug fix release, hopefully with:
+    - optimized framer, limited support for multidrop on the server side
+    - more typing in the core
+    - 100% test coverage fixed for all new parts (currently transport and framer)
+- 3.7.5, bug fix release, hopefully with:
+    - Updated PDU, moving client/server decoder into pud.
+- 3.7.6, bug fix release, with ???
+- 3.8.0, with:
+    - new transaction handling
+- 4.0.0, with:
+    - client async, but with sync/async API
+    - Only one datastore, but with different API`s
+    - Simulator standard in server
+    - GUI client, to analyze devices
+    - GUI server, to simulate devices
+
+All contributions are WELCOME, and we (the maintainers) are always open to talk about ideas,
+best way is via `discussions <https://github.com/pymodbus-dev/pymodbus/discussions>`_ on github.
+
+We have lately decided, that we do strictly follow the `modbus org <https://modbus.org>`_ standard,
+but we also accept vendor specific (like Huawei) pull requests, as long as they extend the standard.