IE 10 support deprecated

CHANGELOG.md

@@ -4,8 +4,14 @@
 
 The "UNDER DEVELOPMENT" section of the Mattermost changelog appears in the product's `master` branch to note key changes committed to master and are on their way to the next stable release. When a stable release is pushed the "UNDER DEVELOPMENT" heading is removed from the final changelog of the release. 
 
+- **Release candidate anticipated:** 2015-11-10
 - **Final release anticipated:** 2015-11-16
 
+### Changes
+
+- IE 10 no longer supported since global share of IE 10 fell below 5%
+
+
 ## Release v1.1.0
 
 Released: 2015-10-16