WordPress unveiled Gutenberg 13.7 which contains numerous refinements that improve the workflow, provide more granular control within the full site editor, and numerous improvements to the user interface.
Like any other release from WordPress, this is a cumulative update and not a whole new experience.
That said, the editing experience should feel more intuitive and natural.
Block Locking Offers More Granular Control
13.7 contains further improvements to the ability to lock block elements to prevent them from changing.
The newest improvement is that users now have the ability to apply the lock feature to block elements contained within a block