https://github.com/WordPress/gutenberg/pulls?q=is%3Apr+is%3Amerged+label%3A%22Needs+Dev+Note%22

Here are all the PRs that need a Dev Note to be written. I tried organizing the PRs in different sections and each section represents a single make/core post.

Please share the dev notes here as comments here or links to shared documents. Please let me know if you're unable to write a note for your PR. The notes should be posted before WP 5.8 RC (June 29), but the sooner, the better.

Global Styles and Global Settings (theme.json)

• A post to introduce the theme.json file and its capabilities is needed. Maybe my own blog post could serve as a base for this post. The labeled PRs related to this are: Rename and stabilize useEditorFeature as useSetting #31587 (we probably miss a number of unlabeled PRs here) Published

Template Mode for classic themes

• Introducing the template mode Allow creating custom block templates in classic themes #30438 cc @youknowriad Published
• iFraming the template mode Iframe the template editor #31375 cc @ellatrix (I wonder if we should have a dedicated dev note for the iframing)

New Block Supports flags and Customizations Options

It seems most PRs introducing these are unlabeled. cc @nosolosw in case you know what new options have been stabilized/introduced during the 5.8 cycle.

• Layout config Add a layout config to the group and theme.json and make alignments declarative #29335 @youknowriad

Widgets Editor

A post about the new widgets editor and how it impacts third-party developers.

Related PRs:

• Add widget id to blocks in the widgets screen #28379 cc @kevin940726 @noisysocks @talldan

Various Block Editor API removals.

• Remove APIs deprecated in WP 5.2 Public API: Remove small APIs deprecated in WordPress 5.2 #30283 @youknowriad
• Remove subheading block Remove the subheading block #29627 @youknowriad

Various new Block Editor APIs

• Abstract block editor configuration @gziolo Published
• Consolidate block registration using registerBlockType Blocks: Deprecate registerBlockTypeFromMetadata in favor of registerBlockType #32030 Blocks: Introduce registerBlockTypeFromMetadata API #30293 @gziolo Published
• Additions to the Block Patterns Registration API Block Patterns: Remove scope from Query patterns and introduce blockTypes #30471 @ntsekouras
• Introduce the "group" prop in BlockControls to normalize block toolbars Cover Block: Normalize the block toolbar #29247 @youknowriad
• resolveSelection function in the data module Data: graduate the __experimentalResolveSelect function to a stable status #28544 @jsnajdr
• Enqueue script and style assets only for blocks present on the page @aristath

Various changes to styling of blocks and editor potentially impacting themes.

I feel there's a number of unlabeled changes here. Let me know what we should include here cc @carolinan @scruffian @aristath @MaggieCabrera @kjellr

• Deprecating the dark theme support flag Dark Theme Support: Allow for theme modifications #28233 @scruffian
• Updated reset Reset all WP Admin styles in the wrapper of the editor styles. #29590

Please update the issue If you think there are other changes that would require a dev note.

Also cc @zzap as documentaion lead.