The image actually appears to be a photo of the screenshot, superimposed over an iPhone XS frame, as evidenced by its blurriness.
The redesigned Reminders app has a much cleaner design than the current version, with categories for Today, Scheduled, All, and Flagged, as we saw in a leaked screenshot of the new Reminders app on iPad last week. Dark Mode appears to be a true-black interface, which would of course benefit battery life.
Reminders is one of many Apple apps expected to be updated in iOS 13, alongside Messages, Mail, Maps, Books, and Health, according to Bloomberg‘s Mark Gurman. He has also reported that Apple will merge its Find My iPhone and Find My Friends apps into one app for tracking the location of devices and friends.
MacRumors will have live coverage of the WWDC keynote on our website and on Twitter starting at 10 a.m. Pacific Time. Apple will also be providing a live stream of the keynote on its website and at select Apple retail stores around the world. Follow along throughout the day for up-to-the-minute updates.