Office in the Microsoft Copilot app: what it is and what’s missing

What Microsoft announced

On 9 October 2026 Microsoft announced that it is bringing Office into the new Microsoft Copilot app. According to the official announcement (opens in a new tab), you can start in Chat or Cowork to explore an idea or create a first draft in Word, Excel or PowerPoint, then keep editing and collaborating in the same place, or switch to the standalone apps without losing context.

Microsoft also mentions built-in sharing, comments, co-authoring and presence, a Library of files, and the option to pick a model or let Auto choose one. Files are saved to OneDrive and, according to Microsoft, keep their formatting, comments, sharing permissions and version history while inheriting the organisation’s security labels and compliance controls.

The last sentence of the announcement sets the scope: ‘Office in Copilot is rolling out today for Frontier customers in Chat and Cowork.’ It is not generally available.

What the Frontier programme is

According to Microsoft Support (opens in a new tab), Frontier is an early-access space for the latest AI features in Microsoft 365, with experimental agents and preview features that may change. The admin documentation (opens in a new tab) adds that Frontier is managed at tenant level, that its features are in preview and subject to change, and that access is set to ‘No access’ by default: the admin decides whether to open it to everyone or to specific users. A Microsoft Copilot licence is also required.

Microsoft says early Frontier features are initially in English for US-based subscribers and that availability will expand over time. The 9 October announcement gives no general availability date, price, languages or countries for this feature.

What it means for your business

• If you already use Microsoft 365 and Copilot, this shows where the product is going: work from the conversation and end up with an ordinary Office file.
• None of this is open to everyone yet. Do not build processes or training around a preview feature.
• Your IT admin decides whether to try it. Switching on Frontier in production is a decision for the organisation, not for each employee.
• With personal or confidential data, check first with whoever handles GDPR compliance what can go into Copilot and under which contract terms. The announcement mentions inherited compliance controls, but that does not replace the check.

How to try it this week

• Ask your IT admin whether you have Microsoft Copilot licences and whether Frontier is switched on (it is off by default).
• Without Frontier, try the same flow with Copilot Chat and Word, using a public or made-up text.
• With Frontier, ask for a draft document built from invented notes, with no names, client data or internal content.
• Note what a person corrects by hand and how much time it saves, so you decide on evidence rather than impressions.
• Write a one-line rule on what information never goes into the tool.

IAescola designs tailored training for teams that want to learn to use these tools well, starting from their own work.