Excel: Plan Mode for Copilot in Excel
Plan Mode for Copilot in Excel helps users make complex changes with confidence by outlining a clear, step by step approach before anything in the workbook is updated. Users can review how Copilot intends to complete the task, see which data or capabilities may be used, and adjus
DIGITAL SKILL WORKS LTD / 12 PANES
What it is
Excel: Plan Mode for Copilot in Excel is a Microsoft 365 roadmap item published via Microsoft Release Communications. Current status: Launched.
What it does
Plan Mode for Copilot in Excel helps users make complex changes with confidence by outlining a clear, step by step approach before anything in the workbook is updated. Users can review how Copilot intends to complete the task, see which data or capabilities may be used, and adjust the plan as needed—ensuring edits are intentional, transparent, and aligned with their goals before they’re applied. This makes it easier to tackle multi step or high impact tasks while staying in control of every change.
Why you should care
Board
Track as Horizon signal; decide whether it changes Wave 0 priority or stays on the watchlist.
CISO
Confirm identity, data access, and overshare exposure before enabling for broad cohorts.
CFO
Map licence or consumption impact to the frozen value case; avoid seat spray.
Adoption
Pilot with a named cohort and measure changed work, not vanity clicks.
Suggested action
Wave 0 first: Security → GRC → Cost & Value → Licence → Adoption. Decide: adopt for a named cohort, defer, or reject. If adopting, update licence and adoption plans in the same week.
12 Panes: 03 Horizon · 08 Adoption
Communication needed
- Security: Assess exposure, Conditional Access, and agent/tool permissions.
- GRC: Update AI/agent register and evidence path; confirm DPIA triggers if personal data is in scope.
- FinOps: Forecast seat or credit impact; align to frozen value case.
- Adoption: Plan cohort messaging, clinics, and success measures.
- Comms: One story for board and staff — what changes, what does not, who owns risk.
Benefits
- May improve productivity on a specific Microsoft 365 surface when permissions and data quality allow.
- Roadmap visibility helps Horizon planning without guessing dates.
Risks
- Status and dates change; treat MRC as directional, not a contract.
- Enabling without Steady controls can amplify overshare or cost leakage.
Source
- MRC id: 560338
- Status: Launched
- Products: Excel
- GA / disclosure: May CY2026
- Preview: —
- Platforms: Desktop, Mac, Web
- Cloud instances: Worldwide (Standard Multi-Tenant)
- moreInfoUrls: —
- Open on Microsoft 365 Roadmap
Microsoft Release Communications / Microsoft 365 Roadmap (AI at Work). Content is subject to Microsoft API Terms of Use. Dates and status change; verify in the official roadmap before acting.