diff --git a/CHANGELOG.md b/CHANGELOG.md
index 04d71c6ffcba18f9eaf0058c6e3a9e75ef60662b..c481b7cc11078e88d48a4dae1d3d96acc3f6a090 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,3 +6,10 @@ NC 11 (????-??-??)
 * PHP 5.4 and 5.5 no longer supported
 * PHP 7.1 support
 * OC_L10N removed use \OCP\IL10N (#1948)
+* Preview handling is improved by sharing previews:
+  * Preview sharing (shared files/external storages)
+  * Previews are stored in the AppData
+  * Previews are served faster by not first converting them to image objects
+* Core preview route changed:
+  * Route for the urlgenerator changed from 'core_ajax_preview' to 'core.Preview.getPreview'
+  * $urlGenerator->linkToRoute('core_ajax_preview', ...) => $urlGenerator->linkToRoute('core.Preview.getPreview', ...)