Doc: Add Qt 6 changes file

Task-number: QTBUG-84051
Change-Id: Ic7b798b13596d376bdcf52b2a6d17672ee20698d
Reviewed-by: Topi Reiniö <topi.reinio@qt.io>

2 files changed, 47 insertions, 0 deletions

diff --git a/src/doc/src/qt3d-index.qdoc b/src/doc/src/qt3d-index.qdoc
index f1395cfb0..00a489d50 100644
--- a/src/doc/src/qt3d-index.qdoc
+++ b/src/doc/src/qt3d-index.qdoc
@@ -108,6 +108,10 @@
         \li WinRT - Not supported yet
     \endlist
 
+    \section1 Module Evolution
+    \l{Porting to Qt 6 - Qt3D} lists important changes in the module API
+    and functionality that were done for the Qt 6 series of Qt.
+
     \section1 Licenses and Attributions
 
     Qt 3D is available under commercial licenses from \l{The Qt Company}.
diff --git a/src/doc/src/qt6-changes.qdoc b/src/doc/src/qt6-changes.qdoc
new file mode 100644
index 000000000..1fd694d30
--- /dev/null
+++ b/src/doc/src/qt6-changes.qdoc
@@ -0,0 +1,43 @@
+/****************************************************************************
+**
+** Copyright (C) 2020 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:FDL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Free Documentation License Usage
+** Alternatively, this file may be used under the terms of the GNU Free
+** Documentation License version 1.3 as published by the Free Software
+** Foundation and appearing in the file included in the packaging of
+** this file. Please review the following information to ensure
+** the GNU Free Documentation License version 1.3 requirements
+** will be met: https://www.gnu.org/licenses/fdl-1.3.html.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*!
+    \page qt3d-changes-qt6.html
+    \title Porting to Qt 6 - Qt3D
+
+    Qt 6 is a result of the conscious effort to make the framework more
+    efficient and easy to use.
+
+    We try to maintain binary and source compatibility for all the public
+    APIs in each release. But some changes were inevitable in an effort to
+    make Qt a better framework.
+
+    In this topic we summarize those changes in Qt3D, and provide guidance
+    to handle them.
+
+    \section1 ADD STUFF HERE
+*/