Update index.html with additional track placeholder

index.html

@@ -48,6 +48,19 @@ <h2 id="our-call-for-papers">Our call for papers</h2>
     Proceedings, including full papers and abstracts, will be published in the ACM Digital Library.
   </p>
 
+
+  <p>In addition to the papers and workshop track, we have 3 new tracks that are accepting submissions:</p>
+
+<ol><li>
+A fast track for papers that will be published in the ACM Library conference proceedings (full drafts due July 25). Please submit to easychair as per the full papers and extended abstracts track. 
+ </li></li>
+A track for previously published papers that we will showcase and discuss at the Symposium, but not publish in the conference proceedings (self-nominations for these also due July 25). A submission form will be available soon. 
+ </li><li>
+A non-archival posters track, particularly suitable for researchers more used to non-archival conferences (poster proposals due September 2). A submission form will be available soon. 
+</li></ol>
+
+
+
   <p>
     {%- for chairs in site.data.oc -%}
       {%- for role in chairs -%}