(DOCSP-29866): Add links to rapid release notes on 7.0 notes (#3313)

* (DOCSP-29866): Add links to rapid release notes on 7.0 notes

* wording

* fix link text

* fix ref

* address review feedback

Author: jeff-allen-mongo

source/release-notes/7.0.txt

@@ -12,6 +12,17 @@ Release Notes for MongoDB 7.0 (Release Candidate)
    :depth: 1
    :class: twocols
 
+This page describes changes and new features introduced in MongoDB 7.0.
+
+MongoDB 7.0 is a |lts| Release, which means that it is supported for
+both MongoDB Atlas and on-premises deployments. MongoDB 7.0 includes
+changes introduced in MongoDB Rapid Releases 6.1, 6.2, and 6.3. To see
+changes introduced in these rapid releases, see
+:ref:`7.0-rapid-release-changes`. 
+
+To learn more about the differences between |lts| and Rapid releases,
+see :ref:`release-version-numbers`.
+
 Atlas Search Index Management
 -----------------------------
 
@@ -190,6 +201,21 @@ command accepts the ``enableAutoMerger`` parameter. Use
 :ref:`{+auto-merge-upper+} <automerger-concept>` takes this collection 
 into account.
 
+.. _7.0-rapid-release-changes:
+
+Changes Introduced in 6.X-Series Rapid Releases
+-----------------------------------------------
+
+MongoDB 7.0 includes changes and features from the following Rapid
+Release versions:
+
+- :ref:`MongoDB 6.1 Release Notes <release-notes-6.1>`
+
+- :ref:`MongoDB 6.2 Release Notes <release-notes-6.2>`
+
+- :ref:`MongoDB 6.3 Release Notes <release-notes-6.3>`
+
+
 .. _7.0-upgrade:
 
 Upgrade Procedures