Add 2.6 release note.

llvm-svn: 84934
diff --git a/llvm/docs/GettingStarted.html b/llvm/docs/GettingStarted.html
index 890d8f8..476ccf1 100644
--- a/llvm/docs/GettingStarted.html
+++ b/llvm/docs/GettingStarted.html
@@ -724,6 +724,7 @@
 subdirectories of the '<tt>tags</tt>' directory:</p>
 
 <ul>
+<li>Release 2.6: <b>RELEASE_26</b></li>
 <li>Release 2.5: <b>RELEASE_25</b></li>
 <li>Release 2.4: <b>RELEASE_24</b></li>
 <li>Release 2.3: <b>RELEASE_23</b></li>