SharePoint Pages will add Heading 1 (H1) as an optional heading level in web part title areas to enhance accessibility and semantic structure. The rollout starts mid-May 2026 for Targeted Release and late May 2026 for General Availability. No admin action is needed; existing pages remain unchanged.
Applies to: SharePoint Online
Source: mc.merill.net — data via Merill Fernando's open archive (MIT).