This release introduces drag and drop capabilities for sorting blocks, various refinements to the block visual interface (including a label with block type identifier) and extensibility APIs, plus a lot of bug fixes.
This release has a strong focus on developer APIs, introducing new and improved tools to extend and interact with the editor. On the user side, there are updates to shared blocks, font size UI, accessibility, mobile, stability, and many bug fixes.
This release includes significant progress in consolidating the codebase and refining aspects of the experience. Notably, it introduces APIs for extending Gutenberg beyond blocks, allowing plugins to register a full sidebar for their functionality.