Merge pull request #258 from edx/ahodges/coming_soon

Addition to coming soon for this week's release notes

en_us/release_notes/source/coming_soon.rst

@@ -23,4 +23,15 @@ zone, country, and language, as well as include a profile photo or avatar. In
 discussion posts, learners will be able to click other learners' profile links
 to view their profile details.
 
+******************************
+Insights into Ungraded Content
+******************************
+
+Following the release of student performance data for graded assignments a few
+weeks ago, course teams will soon be able to use edX Insights to access the
+same data for ungraded exercises. The answers that students submit for
+questions in ungraded units will be available, as well as aggregated
+performance data at the section, subsection, and unit level.
+
+
 .. include:: links.rst