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Changes recurring event visibility so that visibility edits apply to the entire series and existing events adopt the strictest visibility setting in the series.
Google Calendar now prevents users from changing the visibility of a single event within a recurring series; any visibility change affects all events in the series. Additionally, existing events in a recurring series are updated to match the strictest visibility setting among the series (e.g., if one event is private, all become private).
Release: Both • Rapid: 2026-07-07 • Scheduled: 2026-07-07 -
Introduces a new calendar sharing permission level 'Make changes (see private events as free/busy)' that lets delegates edit calendar while hiding private event details.
Google Calendar adds a new sharing permission level named 'Make changes (see private events as free/busy)'. Delegates with this permission can create, delete, and edit non-private events, but private events appear only as 'busy' blocks and cannot be edited or rescheduled. Private events are also hidden from search results for delegates, providing leaders a way to assign calendar management support without exposing private details.
Release: Both • Rapid: 2026-07-07 • Scheduled: 2026-07-07 -
2026-06-18Comms & Meetings
New organization filter for the CalendarList:list API method to monitor secondary calendar ownership.
A new filtering option is being added to the CalendarList:list API method that restricts results to return only secondary calendars owned by the organization. This allows administrators to programmatically monitor the ownership status of users' secondary calendars and make necessary adjustments in preparation for upcoming secondary calendar data lifecycle changes.
Release: Both • Rapid: 2026-07-06 • Scheduled: 2026-07-06 -
2026-06-18Comms & Meetings
New Calendar API endpoint for programmatically transferring secondary calendar ownership.
Google is introducing a new endpoint in the Calendar API that allows administrators to programmatically transfer the ownership of secondary calendars between users in the same organization. This functionality mirrors the Admin console's data transfer feature but provides greater flexibility by allowing administrators to transfer specific, individual secondary calendars without requiring recipient confirmation or sending emails.
Release: Both • Rapid: 2026-06-18 • Scheduled: 2026-06-18 -
Google Calendar is expanding event coloring options to include up to 200 custom colors.
Google Calendar is increasing its event coloring options beyond the previous 11 predefined colors. Users can now choose from 24 default colors or define their own using an RGB color picker on the web and via the Calendar API, allowing for up to 200 custom colors for individual events across web and mobile apps.
Release: Both • Rapid: 2026-06-17 • Scheduled: 2026-06-29 -
Data loss prevention (DLP) policies for Google Calendar are now generally available.
Google Calendar now supports Data Loss Prevention (DLP) policies, allowing administrators to protect sensitive information shared within event titles, descriptions, and locations. Admins can configure rules to audit, warn, or block the creation and updating of events containing sensitive data, such as credit card or national identification numbers. Users receive immediate feedback via pop-up notifications on the web or automated emails on mobile and API updates when a policy is violated.
Release: Both • Rapid: 2026-06-03 • Scheduled: 2026-06-03 -
Non-Google users can now book Google Workspace resources directly from their preferred calendar service.
An open beta is being introduced allowing non-Google users, including those on Microsoft Outlook, to book Google Workspace resources such as rooms or equipment directly from their preferred calendar system. Admins can grant specific non-Google users or entire domains booking permissions via the Admin Console. Once configured, non-Google users can reserve resources by simply adding the resource's email address to their calendar event guest list.
Release: Both • Rapid: 2026-04-07 • Scheduled: 2026-04-07 -
Non-Google users can now book Google Workspace resources from their preferred calendar services.
Google Workspace is introducing an open beta that allows non-Google users, such as those using Microsoft Outlook, to book shared resources like rooms, projectors, or company cars directly from their own calendar service. Admins can grant booking permissions to specific non-Google users or entire domains via the Admin Console. Once configured, non-Google users can reserve a resource by adding its email address to a calendar event guest list. Additionally, for organizations using Microsoft Outlook, admins can configure Calendar Interop to allow Outlook users to find resources by name and view availability before sending an invite.
Release: Both • Rapid: 2026-04-07 • Scheduled: 2026-04-07 -
Secondary calendar lifecycle changes for personal Google accounts.
For users with personal Google accounts, the secondary calendar lifecycle changes—where secondary calendars are permanently deleted upon the deletion of the owner's account—will take effect starting April 27, 2026.
Release: Both • Rapid: 2026-04-27 • Scheduled: 2026-04-27 -
Postponed enforcement date for secondary calendar lifecycle changes for non-personal Workspace accounts.
The enforcement date for secondary calendar lifecycle changes for non-personal Workspace accounts has been moved to October 5, 2026. From this date, secondary calendars will be permanently deleted when the owner's account is deleted, and the current process of auto-assigning orphan calendars to users with management access will stop.
Release: Both • Rapid: 2026-10-05 • Scheduled: 2026-10-05 -
New API endpoint to programmatically transfer secondary calendar ownership.
Google is introducing a new endpoint in the Calendar API that allows developers with Calendar administrator privileges to programmatically transfer the ownership of secondary calendars within the same organization. This new capability mirrors the existing Admin console functionality and provides additional flexibility to transfer individual calendars.
Release: Both • Rapid: 2026-06-01 • Scheduled: 2026-06-01 -
Google Calendar now allows users to easily find and set time zones by searching for a city or country, simplifying scheduling across different time zones.
Google Calendar is introducing an enhanced time zone picker on the web, enabling users to search for and select a specific city or country instead of manually scrolling through a list. This feature aims to streamline the process of coordinating and scheduling meetings with individuals in various time zones. The improvement is applicable across all Google Calendar interfaces where time zone selection is possible, including meeting scheduling, setting a secondary time zone for the main calendar grid, or configuring the world clock.
Release: Both • Rapid: 2026-03-12 • Scheduled: 2026-04-05 -
Improved time zone picker in Google Calendar allowing search by city or country.
Google Calendar on the web is introducing an improved time zone picker that allows users to search for and select a specific city or country instead of manually scrolling through a list. This enhancement is available across all Google Calendar surfaces where time zones are selected, including meeting scheduling flows, secondary timezone settings for the main calendar grid, and world clock configurations.
Release: Both • Rapid: 2026-03-12 • Scheduled: 2026-04-05 -
2026-03-10Comms & Meetings
Better screen scaling for Google Calendar on large monitors
Google Calendar on the web now offers improved scaling on large, high-resolution monitors, reducing unnecessary whitespace and better utilizing screen space for a clearer overview of the day's events. This update provides better visibility for events, prioritizes a relevant 12–15 hour range, and applies to both the main Calendar application and the side panel companion view in other Workspace apps.
Release: Both • Rapid: 2026-03-10 • Scheduled: 2026-04-10 -
2026-03-10Comms & Meetings
Improved screen scaling for Google Calendar on large, high-resolution monitors.
Google Calendar on the web now offers improved scaling for large, high-resolution monitors to reduce unnecessary whitespace and better utilize available screen space. This update improves visibility for short meetings and prioritizes a relevant 12–15 hour range based on the user's viewport height. These improvements are applicable to both the main Calendar application and the side panel companion view within other Workspace apps like Gmail.
Release: Both • Rapid: 2026-03-10 • Scheduled: 2026-05-05