What’s new in Gutenberg?

This new release completes some cool additions to the editor. It includes the ability to create reusable templates by selecting multiple blocks in the editor. It then allows exporting and importing these templates using a JSON file transport. There’s also a visual diff mechanism for comparing options when a block was detected as invalid (which could scale in the future to improved UX for revisions as a whole), toolbar groups can be defined as collapsible into a dropdown to better organize available block controls. There’s also the addition of a much clearer drag handle for drag and drop block operations next to the block arrow controls. It’s also possible to convert an image into a cover image and back, retaining the caption as the main text among many other small improvements and fixes.
3.9
Add support for creating reusable blocks out of multi-selected groups of blocks not just individual blocks. This means the ability to easily save templates out of an existing set of blocks.
Add support for importing and exporting reusable blocks (using a JSON file transport). Note that locality of resources can be a problem if importing on a separate WordPress site.
Allow to visually
Source: https://managewp.org/articles/17898/what-s-new-in-gutenberg

source https://williechiu40.wordpress.com/2018/09/22/whats-new-in-gutenberg/