(DOCSP-15265) 2.14.3 release notes (#299)

* (DOCSP-15265) 2.14.3 release notes

Author: zach-carr

source/release-notes.txt

@@ -20,6 +20,46 @@ Release Notes for |bi|
 .. expect and we don't break the links on the downloads page.
 .. (DOCS-9670 for context)
 
+.. _bi-2-14-3:
+
+|bi| 2.14.3
+-----------
+
+*Released March 23, 2021*
+
+New Features
+~~~~~~~~~~~~
+
+- Enables the use of externally sourced values in .yaml configuration 
+  files.
+
+- Adds support for the following fields in .yaml configuration files:
+
+  - ``trim``
+  - ``type``
+  - ``digest``
+  - ``digest_key``
+
+Bug Fixes
+~~~~~~~~~
+
+- Fixes an issue where documents with ``null`` values were incorrectly 
+  returned from some queries.
+
+- Fixes an issue where some queries took longer to complete than in 
+  previous versions of |bi-short|. 
+
+- Fixes an issue where the ``listDatabases`` command returned an error 
+  when read preference was set to an analytics node in some sharded 
+  cluster configurations.
+
+Improvements
+~~~~~~~~~~~~
+
+- Now built with Go 1.5.0. 
+
+- Adds the Amazon Linux 2 ARM 64 distribution to the download center.
+
 .. _bi-2-14-2:
 
 |bi| 2.14.2