*Helen Zhang*
-### Changes between 3.6 and 4.0 [xx XXX xxxx]
+### Changes between 3.6 and 4.0.0 [14 Apr 2026]
* Added `-expected-rpks` option to the `openssl s_client`
and `openssl s_server` commands. This makes it possible to specify
OpenSSL Releases
----------------
+ - [OpenSSL 4.1](#openssl-41)
- [OpenSSL 4.0](#openssl-40)
- [OpenSSL 3.6](#openssl-36)
- [OpenSSL 3.5](#openssl-35)
- [OpenSSL 1.0.0](#openssl-100)
- [OpenSSL 0.9.x](#openssl-09x)
-OpenSSL 4.0
+OpenSSL 4.1
-----------
### Major changes between OpenSSL 4.0 and OpenSSL 4.1 [under development]
* API calls `CRYPTO_atomic_load_ptr`, `CRYPTO_atomic_store_ptr`, and
`CRYPTO_atomic_cmp_exch_ptr` have been added.
-### Major changes between OpenSSL 3.6 and OpenSSL 4.0 [under development]
+OpenSSL 4.0
+-----------
+
+### Major changes between OpenSSL 3.6 and OpenSSL 4.0.0 [14 Apr 2026]
OpenSSL 4.0.0 is a feature release adding significant new functionality
to OpenSSL.