This issue proposes the following new (or enhanced) block supports for WordPress 7.0., including documentation.

If you're reading this, feel free to add / edit this list as supports are included or descoped for the release.

New block supports

• Add Line Indent support. #73114
  • Add classname to paragraph blocks
  • Revisit line indent support leveraging paragraph block classname for global styles selector
  • Explore options to change indentation behaviour (first paragraph included or only subsequent paragraphs) via preference or locale

• Add width block supports under dimensions. #71905
• Add height block support to dimension #71914
• Add a text gradient block support #30982

Enhancements or Refactorings

• Block Supports: Extract reusable preset input control from spacing sizes and border radius controls #73787
• Dimensions Support: Add dimension presets and adopt for width and min height block supports #73811

Migrating ad hoc solutions to use

• Evaluate following blocks with ad hoc attributes for migration to new width support:
  • core/button (Button: Migrate to width block support #74242)
  • core/column
  • core/comment-author-avatar
  • core/image
  • core/post-featured-image
  • core/search
  • core/site-logo
  • core/spacer
  • core/text-columns
• Evaluate following blocks with ad hoc height attributes for migration to new support
  • core/comment-author-avatar
  • core/image
  • core/post-featured-image
  • core/spacer
  • core/site-logo (no height, only width)
• Define expected behaviour when dimensions.width is used alongside layout and alignment supports (alignwide/full, flex grow/fit/fixed, grid spans)
  • Conditionally opt-out or ignore dimensions.width support when parent layout is flex, or grid

Bugs in block supports to resolve

• Add support for Position setting to Template Parts for Sticky Headers #50617
• Block Supports: Define CSS vars for blocks based on feature selectors #75226

Stretch

• Gradient backgrounds should be set with background-image instead of background #32787
• Add text indentation support at paragraph block type level #37462 (PR: [Add Line Indent support. #73114]
• New Block: Icon Block #71227