Roadmap 570666 brings "duplicate event" to Outlook for Android and iOS
The whole roadmap entry is one sentence. Microsoft says it is "adding the ability to duplicate an event," and that users will go to the event details and select "duplicate event." The listing says:
| Field | Roadmap value |
|---|---|
| Roadmap ID | 570666 |
| Product | Outlook |
| Platforms | Android, iOS |
| Status | In development |
| Release ring | General Availability |
| Cloud instances | Worldwide (Standard Multi-Tenant), GCC, GCC High |
| Estimated GA | October 2026 |
The entry appeared on September 23, 2026. Microsoft's roadmap describes itself this way: it provides estimated release dates and descriptions for commercial features, and all of that information can change. So October is a target, not a promise. Microsoft hasn't published app version numbers, a per-platform schedule, or a support article for the command yet.
GCC and GCC High are on the list from the start. Government-cloud tenants often get Outlook mobile features months after commercial tenants. If Microsoft sticks to this listing, US public-sector users in those clouds get the command in the same GA window as Worldwide tenants. DoD isn't listed.
Outlook on the web already has "duplicate event"
Duplicating an event isn't a new idea in Outlook. When a user on a Microsoft Q&A thread asked why the feature was missing in 2024, a Microsoft community moderator answered that Duplicate Event feature is not available in the latest version of Classic Outlook. It is available in Outlook on the web and New Outlook for Windows. The moderator suggested using one of those clients instead.
Mobile users have asked for it directly. In a February 2025 thread tagged Outlook for Android, one user asked Microsoft to add the duplicate event feature in the Outlook calendar app (it is on the web version), saying that recreating events can be tedious. The same request comes up with classic Outlook. A 2023 thread shows a user asking whether duplication would ever come to the desktop app, since it only worked in the browser. A Microsoft moderator replied that the function is not officially supported yet.
Those answers are from 2024 and 2025 and come from community moderators, not product documentation. Classic Outlook's status may have changed since. The main point still holds: Outlook's web and new Windows clients have the command, and the roadmap entry is how Microsoft brings the phone apps closer to them.
Microsoft hasn't said what the copy includes
The roadmap entry doesn't say what gets copied. It could be just the title and location, or it could include the attendee list, body notes, recurrence pattern, and a Teams meeting link. It also doesn't say whether the copy opens as a draft you can edit or gets saved straight away.
Those details matter because a meeting and a personal appointment behave differently. If attendees are copied, the new event sends invitations when you save it. If a conferencing link is copied, the new meeting might reuse the old link instead of getting a new one. None of this is documented for the mobile command yet. Check the new event's attendees, time, and meeting link before you tap send, at least until you've seen how the shipping version behaves in your tenant.
Users of the existing clients have run into the same question. In an older Q&A thread about copying meetings in classic Outlook, a Microsoft moderator pointed out that when a meeting is copied, the other meeting details like notes would also be included in the new meetings, so you may have to manually remove the unnecessary notes before sending out the new meeting invitation. That was about a different client and method. It still shows why you should read a copied meeting before you send it.
This feature isn't a fix for Outlook mobile's duplicate-invitation bug
Search results for "Outlook mobile duplicate event" mostly show a different problem: duplicates you didn't ask for. Microsoft documents one of these as a known issue. When someone adds a new attendee to an existing meeting in Outlook for Android or Outlook for iOS with an Exchange on-premises mailbox, the invitation might be sent twice from the Outlook mobile app. A duplicate event then shows up in the new attendee's calendar, and a duplicate invitation lands in the organizer's Outbox.
Microsoft says the bug only occurs with Exchange on-premises mailboxes. It doesn't affect people who were invited when the meeting was first created. The known-issue page was last updated April 10, 2025, and lists the status as under investigation by the Exchange Calendar Backend team. Microsoft's workaround is to add the new attendee in Outlook on the web (OWA) or Outlook for Windows instead of the mobile app.
Roadmap 570666 has nothing to do with that bug. The new command creates a copy only when you ask for one. The known issue creates copies nobody asked for, and only in an on-premises Exchange setup. Help desks should keep the two apart. After the command ships, a user who reports "duplicate events on my phone" might have hit the Exchange bug, a calendar sync problem, or might just have tapped the new button.
Sync loops cause duplicates too. For a user seeing repeated Google Calendar entries in Outlook Mobile, a Q&A answer said this usually happens when Outlook's calendar sync with Google gets stuck in a loop, so changes are treated as new events instead of updates. The new command doesn't change any of those causes.
What Outlook mobile users and admins should do before October 2026
Nobody needs to deploy or configure anything right now. The feature is still in development. The roadmap doesn't list an admin control for it, and it's a general-availability release through normal app updates. What you can do is set expectations and get support staff ready.
- Don't expect "duplicate event" in Outlook for Android or iOS yet. Roadmap 570666 says it's in development, with an estimated October 2026 GA that may change.
- The listing covers Worldwide multi-tenant, GCC and GCC High tenants. No other cloud instance is named.
- Until Microsoft documents what the copy contains, check attendees, times and any meeting link on a duplicated event before you send it.
- If you need to duplicate an event today, use Outlook on the web or the new Outlook for Windows, where the command already exists.
- If organizers with on-premises Exchange mailboxes add attendees from Outlook mobile, keep using Microsoft's workaround: add them in OWA or Outlook for Windows. The new command doesn't address that bug.
- Tell help desk staff that after October, "duplicate event" in Outlook mobile could mean a deliberate copy, the Exchange on-premises invitation bug, or a sync problem. Each one is handled differently.
If Microsoft ships on time, Outlook for Android and iOS will close a gap with the web and new Windows clients in October 2026. People who reschedule similar meetings from their phones will be able to copy an event from its details screen instead of rebuilding it. Once the command reaches devices, the thing to check is how it handles attendees and meeting links. Microsoft's support documentation or the shipping app will have to answer that, because the roadmap entry doesn't.