Release notes for dotnet 3.4.1 release (#284)

Author: jeffrymorris

modules/project-docs/pages/sdk-release-notes.adoc

@@ -13,6 +13,30 @@ These pages cover the 3._x_ versions of the Couchbase .NET SDK.
 For release notes, download links, and installation methods for 2.7 and earlier releases of the Couchbase .NET Client,  please see the xref:2.7@dotnet-sdk::sdk-release-notes.adoc[2.x .NET Release Notes & Download Archive].
 
 The full installation instructions that were previously on this page can now be found xref:sdk-full-installation.adoc[here].
+[#version-3-4-1]
+== Version 3.4.1 (09 December 2022)
+
+Version 3.4.1 is the second release of the 3.4 series.
+
+=== Special Note
+
+* During a rebalance upgrade from 6.x (or any earlier version) to 7.x, in mixed mode (where you are communicating with Couchbase Server whilst some but not all nodes are upgraded), there is a known issue where data may be written to the wrong location.  
+The solution is to either upgrade to `3.2.9` or greater, or to pause application processing so there are no writes until you have upgraded all nodes.  
+If you encounter a similar situation during migration and need help with mitigation, please contact our support team.
+
+=== Fixed Issues
+
+* https://issues.couchbase.com/browse/NCBC-3204[NCBC-3204]: CombinationTest failure: Test_GetAndLockAsync_Locked
+* https://issues.couchbase.com/browse/NCBC-3283[NCBC-3283]: Search: Min function throws an exception if the argument is  > 0
+* https://issues.couchbase.com/browse/NCBC-3295[NCBC-3295]: KeyNotFound / DocumentNotFound should not trigger the Circuit Breaker
+* https://issues.couchbase.com/browse/NCBC-3296[NCBC-3296]: PopulateCID caches Exceptions forever
+* https://issues.couchbase.com/browse/NCBC-3298[NCBC-3298]: "couchbases://" Does not automatically enable TLS in SDK 3.4 
+* https://issues.couchbase.com/browse/NCBC-3304[NCBC-3304]: ObjectDisposedException on GET command during rebalance
+
+=== New Features and Behavioral Changes
+
+* https://issues.couchbase.com/browse/NCBC-2167[NCBC-2167]: Refactor operation callback handling and exception mapping
+
 
 [#version-3-4-0]
 == Version 3.4.0 (10 November 2022)