Android already has an existing permission for calendar access.
Google Calendar appears to be working on a new setting that would prevent the app from sharing its own info with other calendar apps.
Calendar is also experimenting with a bolder font option.
What’s the most sensitive data on your phone? Your email? Health info? We keep a lot of personal, private information on our mobile devices, and our calendars have got to be right up near the top of that list. Android already enforces permissions for how apps can access your calendar, but now it looks like Google’s own Calendar app is working on some new controls for how its contents get shared with other apps.