Call it "experimental"

_layouts/home.html

@@ -38,7 +38,7 @@
       <div class="wrap page-lead-content">
         <h1>Duplicati 2.0</h1>
         <h2>Store securely encrypted backups on cloud storage services!</h2>
-        <a href="https://github.com/duplicati/duplicati/releases" class="btn-inverse">Download latest version</a> &nbsp; or &nbsp; <a href="
+        <a href="https://github.com/duplicati/duplicati/releases" class="btn-inverse">Download 2.0 (experimental)</a> &nbsp; or &nbsp; <a href="
 https://sites.google.com/a/duplicati.com/duplicati/home" class="btn-inverse">Download 1.3.4</a>
       </div><!-- /.page-lead-content -->
     </div><!-- /.page-lead -->