May 25, 2026 - BI Updates: AI Controls and Authoring

I found qualifying analyst-facing updates for most of the requested platforms in the last 14 days (May 11–25, 2026). The activity was concentrated in AI-assisted analysis/building, dashboard/report authoring, and governed sharing or embedding workflows. (docs.cloud.google.com) Looker - May 7, 2026: In the Looker 26.8 release notes, Conversational Analytics Advanced Analytics (formerly Code Interpreter) moved to general availability. Looker also made default row/column limits for dashboard tile downloads generally available, so dashboard editors can set defaults and viewers can edit them at download time. (docs.cloud.google.com) - May 7, 2026: Looker added support for querying Explores in Development Mode from Conversational Analytics. (docs.cloud.google.com) - May 7, 2026: Looker listed two preview agent features in 26.8: publishing Conversational Analytics Explore data agents to Gemini Enterprise, and using Conversational Analytics data agents on dashboards. However, the release note also says these items were “not yet available” when updated on May 14, so I would treat them as announced but not broadly shipped yet. (docs.cloud.google.com) Power BI - May 2026 update: Power BI added Copilot summary shortcuts on the report ribbon and the visual header, generating report-level or visual-level summaries in the Copilot pane. (learn.microsoft.com) - May 2026 update: The Copilot narrative visual now supports app-owns-data embedding in preview, extending Copilot-generated narrative output to customer-facing embedded scenarios where end users do not sign in. (learn.microsoft.com) - May 2026 update: Explore improvements added perspectives for large data models, matrix auto-expand behavior, and toolbar controls to show or hide totals in table and matrix visuals. (learn.microsoft.com) - May 2026 update: On the BI side, visual calculations and custom totals reached general availability, and report authors also got Set as landing page plus fixed/default column widths for table and matrix visuals. (learn.microsoft.com) Tableau - No qualifying Tableau update surfaced in the official release materials I checked for May 11–25, 2026. The latest Tableau Desktop releases I found on the official downloads page are 2026.1.1 and 2025.3.5, both released April 21, 2026, which is outside the requested window. (tableau.com) Metabase - May 20, 2026 (Metabase 61): Metabase added AI access controls by feature and by user group for both internal and embedded analytics. (metabase.com) - May 20, 2026: Metabase added token/message limits at the instance, user-group, and embedded-customer level, plus reset schedules. ([metabase.com](https://www.metabase.com/releases/m...