The claim comes courtesy of Greek tech news site iphonehellas.gr
In a separate post to Slashleaks iPhoneHellas rumor claims the Apple special event will take place sometime between March 11 and March 20.
Apple has a number of special events in March in recent years, with the last one taking place in 2018 on March 29, when it announced a low cost 9.7-inch with Apple Pencil support , The earliest Apple event in the month of March took place in 2011 on March 2, so there's plenty of room for maneuver.
iPhoneHellas has published information on iOS releases several times over the past decade, although that's not an indicator of the accuracy of this latest rumor, so at this point we'll take a look at it least a pinch of salt.
More to follow!