"Oh look what I found... #darkmodeconfirmed", Wiik tweeted alongside pictures of dark mode enabled on the Messages app. He followed up with a screenshot of a darken UIAlertView. "Yeah I guess darkmode is still in *very* early stages on iOS".
Notably, developer @PoomSmart discovered references to a Dark Mode in the UIKit binary on Monday.
I found lots of dark mode information in iMessages' related frameworks. Hope Apple is probably working on for other apps.
Apple announced a dark mode for the Apple TV during its 2016 WWDC keynote but did not make a similar announcement for iOS. Please follow iClarified on Twitter, Facebook, Google+, or RSS for updates.