X-Git-Url: https://gerrit.o-ran-sc.org/r/gitweb?a=blobdiff_plain;f=docs%2Frelease-notes.rst;h=a6792d2e99427cb05ea7e4ee06ed0e355cf7fdcc;hb=49a4049aafb09ba1918d89c7101200228932e9ec;hp=38e436f7187422a7cdcb63c78e999625acbb89dd;hpb=1b554f47425dac652ada696bdcc09722261a127c;p=pti%2Frtp.git

diff --git a/docs/release-notes.rst b/docs/release-notes.rst
index 38e436f..a6792d2 100644
--- a/docs/release-notes.rst
+++ b/docs/release-notes.rst
@@ -30,6 +30,15 @@ Version history
 | 2020-11-23         | 3.0.0              | Xiaohua Zhang      |                    |
 |                    |                    |                    |                    |
 +--------------------+--------------------+--------------------+--------------------+
+| 2021-06-29         | 4.0.0              | Xiaohua Zhang      |                    |
+|                    |                    |                    |                    |
++--------------------+--------------------+--------------------+--------------------+
+
+Version 4.0.0, 2021-06-29
+-------------------------
+- Fourth version (D release)
+- Enable the AIO duplex mode (2 servers with High Availabity) with additional worker node.
+- Reconstruct the repo to align the upstream projects include StarlingX and Yocto
 
 Version 3.0.0, 2020-11-23
 -------------------------