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+# PIP-347: Extend LTS release process to client SDKs
+
+## Motivation
+
+PIP-175 [1] has introduced the concept of LTS releases in Pulsar, with a
+defined cadence of feature and LTS release and setting a clear expectation
+in terms of support window for each release.
+
+The first Pulsar LTS release to follow this model was 3.0 in April 2023
+and it will be followed by 4.0 release in October 2024.
+
+Users have been very appreciative of these models and it has simplified the
+work of maintainers, now that there are less active versions to support.
+
+While for the Pulsar Java client SDK, we are implicitly adopting the LTS model, that
+is not true for any other Pulsar client SDK, officially supported by the Pulsar
+PMC.
+
+This leaves all the non-Java client SDKs with different release cadences,
+versioning and there is no support policy stated.
+
+
+## Goal
+
+The goal of this proposal is to align the support window for non-Java client
+SDKs to the same LTS model introduced in PIP-175.
+
+The interested clients are:
+ * C++ https://github.com/apache/pulsar-client-cpp
+ * Python https://github.com/apache/pulsar-client-python
+ * Go https://github.com/apache/pulsar-client-go
+ * NodeJS https://github.com/apache/pulsar-client-node
+ * .NET https://github.com/apache/pulsar-dotpulsar
+ * Reactive https://github.com/apache/pulsar-client-reactive
+
+All the above client libraries should switch to the 4.0 version now, to mark the
+first LTS release, then they will do 5.0 18 months after.
+
+Users of these client SDK should be expecting bug fixes for 24 months and
+security for 36 months on the LTS release branches.
+
+This will set a clear expectation for users when deciding on a Pulsar SDK
+version to use.
+
+
+## Changes
+
+All non-Java client SDKs managed by Pulsar PMC, will be starting to follow the
+same LTS release cadence established by Pulsar server releases.
+
+The alignment will be done only in terms of LTS releases. Feature releases will
+be done independently, with no requirement for quarterly feature releases. Each
+client SDK maintainer team (even though there is no formal team, there is
+typically a smaller group of committers/PMCs closely following each language SDK)
+will do feature and patch releases as needed.
+
+The only new requirement will be to perform LTS releases every 18 months.
+
+There will be no additional requirement or additional explicit support window
+for client SDKs feature releases.
+
+
+## Note
+
+Similarly as for Pulsar server LTS releases, the major version digit bump does
+not signify any breaking changes and does not necessarily imply any "big" new
+features are introduced in a release.
+
+The compatibility between client and brokers running in different major versions
+will always be guaranteed, when using the lowest common denominator of
+supported features.
+