gcc-12/changes.html: OpenMP + GCN update

diff --git a/htdocs/gcc-12/changes.html b/htdocs/gcc-12/changes.html
index 07f70b8b..b854c4e6 100644
--- a/htdocs/gcc-12/changes.html
+++ b/htdocs/gcc-12/changes.html
@@ -49,10 +49,14 @@ a work-in-progress.</p>
 <h2 id="languages">New Languages and Language specific improvements</h2>
 
 <ul>
-  <li>OpenMP 5.0 support for Fortran has been extended by the following features
-      which were available in C and C++ before:  <code>depobj</code>
-      and <code>mutexinoutset</code> can now also be used with the
-      <code>depend</code> clause.
+  <li>OpenMP 5.0 support has been extended: The <code>close</code> map modifier
+      and the <code>affinity</code> clause are now supported and for Fortran
+      additionally the following features which were available in C and C++
+      before:  <code>depobj</code>, <code>mutexinoutset</code> and
+       <code>iterator</code> can now also be used with the <code>depend</code>
+      clause, <code>defaultmap</code> has been updated for OpenMP 5.0, and the
+      <code>loop</code> directive and combined directives
+      involving <code>master</code> directive have been added.
   </li>
   <li>The new warning flag <code>-Wopenacc-parallelism</code> was added for
       OpenACC. It warns about potentially suboptimal choices related to
@@ -97,14 +101,17 @@ a work-in-progress.</p>
 
 <!-- <h3 id="aarch64">AArch64</h3> -->
 
+<h3 id="amdgcn">AMD Radeon (GCN)</h3>
+<ul>
+  <li>Debug experience with ROCGDB has been improved.</li>
+</ul>
+
 <!-- <h3 id="arc">ARC</h3> -->
 
 <!-- <h3 id="arm">ARM</h3> -->
 
 <!-- <h3 id="avr">AVR</h3> -->
 
-<!-- <h3 id="hsa">Heterogeneous Systems Architecture</h3> -->
-
 <!-- <h3 id="x86">IA-32/x86-64</h3> -->
 
 <!-- <h3 id="mips">MIPS</h3> -->