diff --git a/readme.txt b/readme.txt
index 54147c423f4a1..53c9748e3ecbc 100644
--- a/readme.txt
+++ b/readme.txt
@@ -112,6 +112,7 @@ There are opportunities for developers at all levels to contribute. [Learn more
 * Map block: add an option for toggling zoom to scroll behaviour in the published post.
 * Mobile Theme: sunset feature. We originally created the mobile theme feature as a fall-back when the regular theme did not include a mobile view. Most themes include a mobile view by default now, so the feature is no longer necessary.
 * OpenTable block: offer more embedding options.
+* Tiled Gallery block: add a Rounded Corners option.
 
 **Improved compatibility**
 
diff --git a/to-test.md b/to-test.md
index 1bf9cccef3cf6..2c0be6f45a5c4 100644
--- a/to-test.md
+++ b/to-test.md
@@ -8,6 +8,14 @@ We've made a lot of changes to the Map block in this release.
 
 We would encourage you to test all features offered by the block, including the new Zoom and Fullscreen options appearing in the block sidebar. Give those features a try in the editor, and check how the map looks like on your site's frontend as well.
 
+#### Tiled Gallery
+
+The Tiled Gallery block now comes with some new options:
+
+- You can choose rounded corners for your galleries.
+
+Give those features a try and let us know how it worked for you.
+
 ### Others
 
 - If you have the opportunity to test in an older browser like IE11, please do so. You may catch some interesting bugs!