Update SOTD based on latest status of CR transition request

remove no longer relevant features at risk
note open substantive issues
link to draft implementation report

webrtc.html

@@ -23,13 +23,16 @@
   </section>
   <section id="sotd">
     <p>The API is based on preliminary work done in the WHATWG.</p>
-    <p>While the specification is feature complete and is expected to be stable, it might evolve based on implementation feedback that will be gathered as its <a href="https://github.com/w3c/web-platform-tests/tree/master/webrtc">associated test suite</a> evolves. This test suite will be used to build an implementation report of the API; to go into Proposed Recommendation status, the group expects to demonstrate implementation of each feature in at least two deployed browsers, and at least one implementation of each optional feature. Mandatory feature with only one implementation may be marked as optional in a revision of this specification where applicable. This document will remain a Candidate Recommendation at least until 15 October 2017.</p>
+
+    <p>While the specification is feature complete and is expected to be stable, there are also a number of <a href="https://github.com/w3c/webrtc-pc/issues?utf8=%E2%9C%93&amp;q=is%3Aopen%20is%3Aissue%20-label%3AEditorial%20">known substantive issues</a> on the specification that will be addressed during the Candidate Recommendation period based on implementation experience feedback.</p>
+
+    <p>It might also evolve based on feedback gathered as its <a href="https://github.com/w3c/web-platform-tests/tree/master/webrtc">associated test suite</a> evolves. This test suite will be used to build an <a href="https://wpt.fyi/webrtc">implementation report</a> of the API.</p>
+
+    <p>To go into Proposed Recommendation status, the group expects to demonstrate implementation of each feature in at least two deployed browsers, and at least one implementation of each optional feature. Mandatory feature with only one implementation may be marked as optional in a revision of this specification where applicable. This document will remain a Candidate Recommendation at least until 15 April 2018.</p>
 
     <p>The following features are marked as risk:</p>
     <ul>
       <li>The value <a href="#dom-rtcrtcpmuxpolicy-negotiate"><code>negotiate</code></a> of RTCRtcpMuxPolicy</li>
-      <li>Support for <a href="#dom-rtcsdptype-rollback">rollback</a></li>
-      <li>Support for the <a href="#dom-rtccertificate-getalgorithm"><code>getAlgorithm</code></a> method on <a href="#dom-rtccertificate"><code>RTCCertificate</code></a></li>
     </ul>
 
   </section>