The Kindle Scribe update includes additional brushes and improved organisation

The Scribe update also improves notebook organisation by allowing you to create subfolders that can be moved in and out of regular folders. While examining a folder after the update, you’ll see a new “+” option; hit it to create a subdirectory. While viewing a folder or subfolder, hit the three-dot contextual menu, pick “move,” and drag it to a new location.