(DOCSP-10675): Release Notes v1.0.0 (#115)

* (DOCSP-10675): Release Notes v1.0.0

* Copy review

Author: melissamahoney-mongodb

source/includes/steps-install-mcli-binary.yaml

@@ -28,6 +28,11 @@ content: |
           
         * - Linux
           - :gh:`.tar.gz </mongodb/mongocli/releases/download/v{+mcli-version+}/mongocli_{+mcli-version+}_linux_x86_64.tar.gz>`
+    
+     .. note::
+
+        Replace or remove any existing {+mcli+} binaries to prevent
+        conflicts between versions.
           
   #. Run the executable file.
 

source/release-notes.txt

@@ -14,12 +14,34 @@ Release Notes for {+mcli-long+}
    :depth: 1
    :class: singlecol
 
+{+mcli+} 1.0.0
+-------------------------------
+
+*Released 2020-06-08*
+
+**Generally Available Release**
+
+This is the Generally Available (GA) release of {+mcli-long+}. This
+version introduces the ability to manage |service|, |onprem| and
+|cloud-short| features, including:
+
+- Projects
+- Clusters
+- Backup
+- Alerts
+- Metrics and monitoring
+
+For a complete list of available commands, see 
+:ref:`mcli-reference`.
+
+To install this version, see :ref:`mcli-install`.
+
 {+mcli+} 0.0.3
 -------------------------------
 
 *Released 2020-02-27*
 
-**Initial Release**
+**Initial Alpha Release**
 
 - |service| commands